diff --git a/.bandit b/.bandit
new file mode 100644
index 0000000..c1c24be
--- /dev/null
+++ b/.bandit
@@ -0,0 +1,10 @@
+[bandit]
+# Skip B108 ("hardcoded temp dir"), see https://github.com/bugsink/bugsink/issues/174
+skips = B108
+
+# Exclude any file named tests.py anywhere under the tree
+exclude = tests.py
+
+# include everything, even LOW
+confidence-level = LOW
+severity-level = LOW
diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
new file mode 100644
index 0000000..2406cc6
--- /dev/null
+++ b/.github/copilot-instructions.md
@@ -0,0 +1,59 @@
+Bugsink is a Django-based error tracker. It's maintained by one developer and favors simple, predictable code over
+abstract generality. Python 3.12 is the standard environment.
+
+## Coding Guidance
+
+* Keep it clear and simple. When in doubt: shorter.
+* Use descriptive names, short functions, minimal boilerplate.
+* Error-handling: avoid catching every possible error; in many cases "fail early"
+  is in fact the idiom which gives much more clarity, especially in utilities.
+* Avoid overly clever or verbose code
+* Keep comments absolutely minimal: only comment to explain unusual or complex
+  (which there shouldn't be anyway)
+* Follow PEP8 and ensure `flake8` passes (CI ignores E741, E731). width: 120 columns.
+* Use Django's function-based views
+
+### Tests
+
+Tests should be either of 2 kinds:
+
+1. Tight unit-tests around easy-to-test, small, functions. These should express intent
+   clearly and enumerate the relevant cases (and no others) very carefully. The data
+   here will be very "synthetic", focussed on expressing intent
+
+2. Broader "integration-like" tests: much more end-to-end, with the goal of covering
+   [a] the integration of parts and [b] the happy paths for those. These tests should
+   not try to enumerate every single case. They should reflect a more typical flow fitting
+   "what would typically happen" (more natural inputs/outputs, no extensive edge-cases)
+
+### Database
+
+Bugsink assumes a single-writer DB model:
+
+* Keep writes as short as possible
+* Do not worry about write-concurrency (there is none)
+* Use the helpers in `bugsink/transaction.py` helpers like `@durable_atomic`
+
+### Frontend (Tailwind)
+
+* Bugsink does NOT have a "modern" backend/frontend split: "classic django instead"
+* Bugsink uses Tailwind via `django-tailwind`
+
+Test the frontend by running the server like so and checking in a browser:
+
+`python manage.py runserver` (uses `bugsink.settings.development`)
+
+(an admin user is available in your environment. login with admin@example.org/admin)
+
+### Before committing
+
+A pre-commit hook is installed in your environment and will block any illegal commit.
+Before commiting, _always_ run the following:
+
+```
+python manage.py tailwind build
+git add theme/static/css/dist/styles.css
+tools/strip-trailing-whitespace.sh
+```
+
+If you fail to do so the pre-commit hook will trigger, and you will not be able to commit.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3572a39..ee86b4a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,9 +7,16 @@ name: Continuous Integration
 
 on:
   push:
-    branches: [ "main" ]
+    # hardcoded list; GitHub does not support wildcards in branch names AFAICT
+    branches: [ "main", "1.4.x", "1.5.x", "1.6.x", "1.7.x", "1.8.x", "1.9.x", "1.10.x", "1.11.x" ]
   pull_request:
     branches: [ "main" ]
+  workflow_dispatch:  # Enables manual invocation via "Run workflow" button in the Actions UI
+    inputs:
+      target_branch:
+        description: 'Branch to run workflow on'
+        required: false
+        default: 'main'
 
 env:
   DJANGO_SETTINGS_MODULE: "bugsink.settings.development"
@@ -34,6 +41,56 @@ jobs:
         # so we just specify it on the command line
         flake8 --extend-ignore=E127,E741,E501,E731 `git ls-files | grep py$`
 
+  bandit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: 3.12
+
+      - name: Install Bandit and Plugins
+        run: |
+          pip install bandit spoils
+
+      - name: Run Bandit and format results
+        shell: bash
+        run: |
+          # set +e disables "exit on any non-zero command" behavior
+          # set +o pipefail disables GH's default "fail the whole pipeline if any stage fails"
+          set +e +o pipefail
+
+          # Note: .py files only; at the time of writing I checked the conf_templates/*.template
+          # also; but they had 2 False positives only (SECRET_KEY lives there by design) and I
+          # don't want to pollute templates that other people deal with with "nosec".
+          bandit_json_output=$( \
+            git ls-files \
+              | grep '\.py$' \
+              | xargs bandit -q -f json --ini .bandit \
+          )
+          bandit_exit_code=$?
+
+          echo "$bandit_json_output" \
+            | jq -r '
+                .results[]
+                | [ .filename
+                  , .line_number
+                  , .test_id
+                  , .issue_confidence
+                  , .issue_severity
+                  , .test_name
+                  ]
+                | @tsv
+              ' \
+            | column -t
+
+          if [[ $bandit_exit_code -ne 0 ]]; then
+            echo "Bandit found issues (exit code $bandit_exit_code)"
+            exit $bandit_exit_code
+          fi
+
   test:
     runs-on: ubuntu-latest
     strategy:
diff --git a/.github/workflows/copilot-setup-steps.yml b/.github/workflows/copilot-setup-steps.yml
new file mode 100644
index 0000000..30b0aab
--- /dev/null
+++ b/.github/workflows/copilot-setup-steps.yml
@@ -0,0 +1,59 @@
+name: "Copilot Setup Steps"
+on:
+  push:
+    paths:
+      - ".github/workflows/copilot-setup-steps.yml"
+  workflow_dispatch:
+  # The "on" section defines when this workflow runs independently.
+  # It has no effect on Copilot itself — Copilot runs this job on demand
+  # if the job name is exactly "copilot-setup-steps".
+  # These triggers just let us test the workflow manually if needed.
+
+jobs:
+  copilot-setup-steps:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    env:
+      DJANGO_SETTINGS_MODULE: bugsink.settings.development
+      SAMPLES_DIR: ${{ github.workspace }}/event-samples
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Install project `pre-commit` hook
+        run: |
+          cp pre-commit .git/hooks/pre-commit
+
+      - name: Set up Python 3.12
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+          pip install -r requirements.development.txt
+        # We install directly from source using pip — no wheels, no Docker.
+        # This keeps the setup fast and simple for Copilot.
+        # To ensure correctness for more complex scenarios (e.g. multiple DBs),
+        # we rely on the actual CI pipeline.
+
+      - name: Run migrations
+        run: |
+          python manage.py migrate
+        # Ensures the SQLite database is initialized.
+
+      - name: Create superuser
+        env:
+          DJANGO_SUPERUSER_USERNAME: admin@example.com
+          DJANGO_SUPERUSER_EMAIL: admin@example.com
+          DJANGO_SUPERUSER_PASSWORD: admin
+        run: |
+          python manage.py createsuperuser --noinput
+
+      - name: Check out event-samples outside workspace
+        # by using a plain-old `git-clone` we are able to "ecape from the working dir"
+        run: |
+          git clone https://github.com/bugsink/event-samples.git ../event-samples
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2932685..667eb01 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,52 @@
 # Changes
 
+## 1.7.6 (1 August 2025)
+
+* envelope-headers `sent_at` check should allow 00+00 (See #179)
+* evenlope-header validation failure should not lead to envelope-rejection (See #179)
+
+## 1.7.5 (31 July 2025)
+
+### General Improvements
+
+* Add failure visibility for alert backends (See #169)
+* Add per-month quota for email-sending (Fix #34)
+* Store `remote_addr` on the event (Fix #165)
+* Use `remote_addr` for `'{{auto}}'` `ip_addr` tags (See #165)
+* `PID_FILE` check: make optional (See #99)
+* `PID_FILE` check: don't use in docker/systemd (Fix #99)
+* Breadcrumb timestamps: display harmonized w/ rest of application (ceca12940bd5)
+
+### Sourcemaps: better debugging
+
+* sourcemaps: Uploaded, but ignored, files: warn (See #158)
+* Sourcemaps: Warn (in the logs) on multiple-debug-ids source uploads (See #157, #158)
+* Debug IDs for missing sourcemaps: show them right in the stacktrace (See #158)
+* Sourcemap Images IDs: show those in event details (See #158)
+
+### Configuration / Settings
+
+* `SINGLE_USER` implies `SINGLE_TEAM` and more (Fix #162)
+* Docker config: `BEHIND_PLAIN_HTTP_PROXY` (Fix #164)
+* Development setting: keep artifact bundles (1aef4a45c2dc)
+
+### Security Hardening
+
+* CI pipeline security checks with Bandit (See #175)
+* Envelope parsing validates headers strictly (See #173)
+* Use `django.utils._os.safe_join` to construct paths (see #173)
+
+### Internal Tooling
+
+* Remove the Django Debug Toolbar entirely (Fix #168)
+* semaphore-for-db-write-lock: sqlite only (See #117)
+* `send_json` utility: make envelope API the default (13226603ec7a)
+
+## 1.7.4, 1.6.4, 1.5.5, 1.4.3 (29 July 2025)
+
+Security release. Upgrading is highly recommended. See [this
+notice](https://github.com/bugsink/bugsink/security/advisories/GHSA-q78p-g86f-jg6q)
+
 ## 1.7.3 (17 July 2025)
 
 Migration fix: delete TurningPoints w/ project=None (Fix #155)
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 44f966e..892313a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -40,6 +40,8 @@ python manage.py tailwind build
 git add theme/static/css/dist/styles.css
 ```
 
+The pre-commit hook in the project's root does this automatically if needed, copy it to .git/hooks
+to auto-run.
 
 ### Security
 
diff --git a/Dockerfile b/Dockerfile
index cc52519..cd75fbc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -51,4 +51,4 @@ RUN ["bugsink-manage", "migrate", "snappea", "--database=snappea"]
 
 HEALTHCHECK CMD python -c 'import requests; requests.get("http://localhost:8000/health/ready").raise_for_status()'
 
-CMD [ "monofy", "bugsink-manage", "check", "--deploy", "--fail-level", "WARNING", "&&", "bugsink-manage", "migrate", "&&", "bugsink-manage", "prestart", "&&", "gunicorn", "--config", "gunicorn.docker.conf.py", "--bind=0.0.0.0:$PORT", "--access-logfile", "-", "bugsink.wsgi", "|||", "bugsink-runsnappea"]
+CMD [ "monofy", "bugsink-show-version", "&&", "bugsink-manage", "check", "--deploy", "--fail-level", "WARNING", "&&", "bugsink-manage", "migrate", "&&", "bugsink-manage", "prestart", "&&", "gunicorn", "--config", "bugsink/gunicorn.docker.conf.py", "--bind=0.0.0.0:$PORT", "--access-logfile", "-", "bugsink.wsgi", "|||", "bugsink-runsnappea"]
diff --git a/Dockerfile.fromwheel b/Dockerfile.fromwheel
index 69c5aad..ed65197 100644
--- a/Dockerfile.fromwheel
+++ b/Dockerfile.fromwheel
@@ -28,11 +28,10 @@ RUN --mount=type=cache,target=/var/cache/buildkit/pip \
 # * this moves the dependency on the bugsink wheel up in the build-order, and
 #     that's precisely the most changing part, i.e. the thing that breaks caching.
 #
-# * all current (Apr 2025) dependencies .whl files are available on PyPI anyway.
-#     Exception: inotify_simple, but it's a pure python tar.gz; Nothing much
-#     is gained by fetch-first-install-later. And if we ever depend on further
-#     packages that require a build step, explicit action is probably needed
-#     anyway b/c of the build deps.
+# * all current (Aug 2025) dependencies .whl files are available on PyPI anyway.
+#     Nothing much is gained by fetch-first-install-later. And if we ever
+#     depend on packages that require a build step, explicit action is probably
+#     needed anyway b/c of the build deps.
 #
 # * pointing to requirements.txt here instead of the wheel is tempting, but
 #     breaks the idea of "just build the wheel" (requirements.txt is whatever
@@ -70,11 +69,11 @@ COPY dist/$WHEEL_FILE /wheels/
 RUN --mount=type=cache,target=/var/cache/buildkit/pip \
     pip install /wheels/$WHEEL_FILE
 
-COPY bugsink/conf_templates/docker.py.template bugsink_conf.py
-COPY gunicorn.docker.conf.py /app/
+RUN cp /usr/local/lib/python3.12/site-packages/bugsink/conf_templates/docker.py.template /app/bugsink_conf.py && \
+    cp /usr/local/lib/python3.12/site-packages/bugsink/gunicorn.docker.conf.py /app/gunicorn.docker.conf.py
 
 RUN ["bugsink-manage", "migrate", "snappea", "--database=snappea"]
 
 HEALTHCHECK CMD python -c 'import requests; requests.get("http://localhost:8000/health/ready").raise_for_status()'
 
-CMD [ "monofy", "bugsink-manage", "check", "--deploy", "--fail-level", "WARNING", "&&", "bugsink-manage", "migrate", "&&", "bugsink-manage", "prestart", "&&", "gunicorn", "--config", "gunicorn.docker.conf.py", "--bind=0.0.0.0:$PORT", "--access-logfile", "-", "bugsink.wsgi", "|||", "bugsink-runsnappea"]
+CMD [ "monofy", "bugsink-show-version", "&&", "bugsink-manage", "check", "--deploy", "--fail-level", "WARNING", "&&", "bugsink-manage", "migrate", "&&", "bugsink-manage", "prestart", "&&", "gunicorn", "--config", "gunicorn.docker.conf.py", "--bind=0.0.0.0:$PORT", "--access-logfile", "-", "bugsink.wsgi", "|||", "bugsink-runsnappea"]
diff --git a/README.md b/README.md
index b713152..f953d4e 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Bugsink: Self-hosted Error Tracking 
+# Bugsink: Self-hosted Error Tracking
 
 * [Error Tracking](https://www.bugsink.com/error-tracking/)
 * [Built to self-host](https://www.bugsink.com/built-to-self-host/)
@@ -30,6 +30,6 @@ are `admin`.
 
 Now, you can [set up your first project](https://www.bugsink.com/docs/quickstart/) and start tracking errors.
 
-[Detailed installation instructions](https://www.bugsink.com/docs/installation/) are on the Bugsink website. 
+[Detailed installation instructions](https://www.bugsink.com/docs/installation/) are on the Bugsink website.
 
 [More information and documentation](https://www.bugsink.com/)
diff --git a/alerts/admin.py b/alerts/admin.py
index 846f6b4..3ccbddc 100644
--- a/alerts/admin.py
+++ b/alerts/admin.py
@@ -1 +1,10 @@
-# Register your models here.
+from django.contrib import admin
+
+from .models import MessagingServiceConfig
+
+
+@admin.register(MessagingServiceConfig)
+class MessagingServiceConfigAdmin(admin.ModelAdmin):
+    list_display = ('project', 'display_name', 'kind', 'last_failure_timestamp')
+    search_fields = ('name', 'service_type')
+    list_filter = ('kind',)
diff --git a/alerts/migrations/0003_messagingserviceconfig_last_failure_error_message_and_more.py b/alerts/migrations/0003_messagingserviceconfig_last_failure_error_message_and_more.py
new file mode 100644
index 0000000..2fff8ea
--- /dev/null
+++ b/alerts/migrations/0003_messagingserviceconfig_last_failure_error_message_and_more.py
@@ -0,0 +1,43 @@
+# Generated by Django 4.2.23 on 2025-07-28 14:23
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('alerts', '0002_alter_messagingserviceconfig_project'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='messagingserviceconfig',
+            name='last_failure_error_message',
+            field=models.TextField(blank=True, help_text='Error message from the exception', null=True),
+        ),
+        migrations.AddField(
+            model_name='messagingserviceconfig',
+            name='last_failure_error_type',
+            field=models.CharField(blank=True, help_text="Type of error that occurred (e.g., 'requests.HTTPError')", max_length=100, null=True),
+        ),
+        migrations.AddField(
+            model_name='messagingserviceconfig',
+            name='last_failure_is_json',
+            field=models.BooleanField(blank=True, help_text='Whether the response was valid JSON', null=True),
+        ),
+        migrations.AddField(
+            model_name='messagingserviceconfig',
+            name='last_failure_response_text',
+            field=models.TextField(blank=True, help_text='Response text from the failed request', null=True),
+        ),
+        migrations.AddField(
+            model_name='messagingserviceconfig',
+            name='last_failure_status_code',
+            field=models.IntegerField(blank=True, help_text='HTTP status code of the failed request', null=True),
+        ),
+        migrations.AddField(
+            model_name='messagingserviceconfig',
+            name='last_failure_timestamp',
+            field=models.DateTimeField(blank=True, help_text='When the last failure occurred', null=True),
+        ),
+    ]
diff --git a/alerts/models.py b/alerts/models.py
index e7eec32..2c3cec2 100644
--- a/alerts/models.py
+++ b/alerts/models.py
@@ -13,6 +13,33 @@ class MessagingServiceConfig(models.Model):
 
     config = models.TextField(blank=False)
 
+    # Alert backend failure tracking
+    last_failure_timestamp = models.DateTimeField(null=True, blank=True,
+                                                  help_text="When the last failure occurred")
+    last_failure_status_code = models.IntegerField(null=True, blank=True,
+                                                   help_text="HTTP status code of the failed request")
+    last_failure_response_text = models.TextField(null=True, blank=True,
+                                                  help_text="Response text from the failed request")
+    last_failure_is_json = models.BooleanField(null=True, blank=True,
+                                               help_text="Whether the response was valid JSON")
+    last_failure_error_type = models.CharField(max_length=100, null=True, blank=True,
+                                               help_text="Type of error that occurred (e.g., 'requests.HTTPError')")
+    last_failure_error_message = models.TextField(null=True, blank=True,
+                                                  help_text="Error message from the exception")
+
     def get_backend(self):
         # once we have multiple backends: lookup by kind.
         return SlackBackend(self)
+
+    def clear_failure_status(self):
+        """Clear all failure tracking fields on successful operation"""
+        self.last_failure_timestamp = None
+        self.last_failure_status_code = None
+        self.last_failure_response_text = None
+        self.last_failure_is_json = None
+        self.last_failure_error_type = None
+        self.last_failure_error_message = None
+
+    def has_recent_failure(self):
+        """Check if this config has a recent failure"""
+        return self.last_failure_timestamp is not None
diff --git a/alerts/service_backends/slack.py b/alerts/service_backends/slack.py
index be4c9ad..805e526 100644
--- a/alerts/service_backends/slack.py
+++ b/alerts/service_backends/slack.py
@@ -1,11 +1,13 @@
 import json
 import requests
+from django.utils import timezone
 
 from django import forms
 from django.template.defaultfilters import truncatechars
 
 from snappea.decorators import shared_task
 from bugsink.app_settings import get_settings
+from bugsink.transaction import immediate_atomic
 
 from issues.models import Issue
 
@@ -32,8 +34,57 @@ def _safe_markdown(text):
     return text.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;").replace("*", "\\*").replace("_", "\\_")
 
 
+def _store_failure_info(service_config_id, exception, response=None):
+    """Store failure information in the MessagingServiceConfig with immediate_atomic"""
+    from alerts.models import MessagingServiceConfig
+
+    with immediate_atomic(only_if_needed=True):
+        try:
+            config = MessagingServiceConfig.objects.get(id=service_config_id)
+
+            config.last_failure_timestamp = timezone.now()
+            config.last_failure_error_type = type(exception).__name__
+            config.last_failure_error_message = str(exception)
+
+            # Handle requests-specific errors
+            if response is not None:
+                config.last_failure_status_code = response.status_code
+                config.last_failure_response_text = response.text[:2000]  # Limit response text size
+
+                # Check if response is JSON
+                try:
+                    json.loads(response.text)
+                    config.last_failure_is_json = True
+                except (json.JSONDecodeError, ValueError):
+                    config.last_failure_is_json = False
+            else:
+                # Non-HTTP errors
+                config.last_failure_status_code = None
+                config.last_failure_response_text = None
+                config.last_failure_is_json = None
+
+            config.save()
+        except MessagingServiceConfig.DoesNotExist:
+            # Config was deleted while task was running
+            pass
+
+
+def _store_success_info(service_config_id):
+    """Clear failure information on successful operation"""
+    from alerts.models import MessagingServiceConfig
+
+    with immediate_atomic(only_if_needed=True):
+        try:
+            config = MessagingServiceConfig.objects.get(id=service_config_id)
+            config.clear_failure_status()
+            config.save()
+        except MessagingServiceConfig.DoesNotExist:
+            # Config was deleted while task was running
+            pass
+
+
 @shared_task
-def slack_backend_send_test_message(webhook_url, project_name, display_name):
+def slack_backend_send_test_message(webhook_url, project_name, display_name, service_config_id):
     # See Slack's Block Kit Builder
 
     data = {"blocks": [
@@ -67,17 +118,29 @@ def slack_backend_send_test_message(webhook_url, project_name, display_name):
 
             ]}
 
-    result = requests.post(
-        webhook_url,
-        data=json.dumps(data),
-        headers={"Content-Type": "application/json"},
-    )
+    try:
+        result = requests.post(
+            webhook_url,
+            data=json.dumps(data),
+            headers={"Content-Type": "application/json"},
+            timeout=5,
+        )
 
-    result.raise_for_status()
+        result.raise_for_status()
+
+        _store_success_info(service_config_id)
+    except requests.RequestException as e:
+        response = getattr(e, 'response', None)
+        _store_failure_info(service_config_id, e, response)
+
+    except Exception as e:
+        _store_failure_info(service_config_id, e)
 
 
 @shared_task
-def slack_backend_send_alert(webhook_url, issue_id, state_description, alert_article, alert_reason, unmute_reason=None):
+def slack_backend_send_alert(
+        webhook_url, issue_id, state_description, alert_article, alert_reason, service_config_id, unmute_reason=None):
+
     issue = Issue.objects.get(id=issue_id)
 
     issue_url = get_settings().BASE_URL + issue.get_absolute_url()
@@ -134,13 +197,23 @@ def slack_backend_send_alert(webhook_url, issue_id, state_description, alert_art
                 },
             ]}
 
-    result = requests.post(
-        webhook_url,
-        data=json.dumps(data),
-        headers={"Content-Type": "application/json"},
-    )
+    try:
+        result = requests.post(
+            webhook_url,
+            data=json.dumps(data),
+            headers={"Content-Type": "application/json"},
+            timeout=5,
+        )
 
-    result.raise_for_status()
+        result.raise_for_status()
+
+        _store_success_info(service_config_id)
+    except requests.RequestException as e:
+        response = getattr(e, 'response', None)
+        _store_failure_info(service_config_id, e, response)
+
+    except Exception as e:
+        _store_failure_info(service_config_id, e)
 
 
 class SlackBackend:
@@ -156,9 +229,10 @@ class SlackBackend:
             json.loads(self.service_config.config)["webhook_url"],
             self.service_config.project.name,
             self.service_config.display_name,
+            self.service_config.id,
         )
 
     def send_alert(self, issue_id, state_description, alert_article, alert_reason, **kwargs):
         slack_backend_send_alert.delay(
             json.loads(self.service_config.config)["webhook_url"],
-            issue_id, state_description, alert_article, alert_reason, **kwargs)
+            issue_id, state_description, alert_article, alert_reason, self.service_config.id, **kwargs)
diff --git a/alerts/templates/mails/issue_alert.html b/alerts/templates/mails/issue_alert.html
index a1ff7d1..144446c 100644
--- a/alerts/templates/mails/issue_alert.html
+++ b/alerts/templates/mails/issue_alert.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/alerts/tests.py b/alerts/tests.py
index e0db2fd..f5f8c7f 100644
--- a/alerts/tests.py
+++ b/alerts/tests.py
@@ -1,14 +1,20 @@
 from django.test import TestCase as DjangoTestCase
+from unittest.mock import patch, Mock
+import json
+import requests
 
 from django.core import mail
 from django.contrib.auth import get_user_model
 from django.template.loader import get_template
+from django.utils import timezone
 
 from issues.factories import get_or_create_issue
 from projects.models import Project, ProjectMembership
 from events.factories import create_event
 from teams.models import Team, TeamMembership
 
+from .models import MessagingServiceConfig
+from .service_backends.slack import slack_backend_send_test_message, slack_backend_send_alert
 from .tasks import send_new_issue_alert, send_regression_alert, send_unmute_alert, _get_users_for_email_alert
 from .views import DEBUG_CONTEXTS
 
@@ -132,3 +138,167 @@ class TestAlertSending(DjangoTestCase):
         user.send_email_alerts = True
         user.save()
         self.assertEqual(list(_get_users_for_email_alert(issue)), [user])
+
+
+class TestSlackBackendErrorHandling(DjangoTestCase):
+    def setUp(self):
+        self.project = Project.objects.create(name="Test project")
+        self.config = MessagingServiceConfig.objects.create(
+            project=self.project,
+            display_name="Test Slack",
+            kind="slack",
+            config=json.dumps({"webhook_url": "https://hooks.slack.com/test"}),
+        )
+
+    @patch('alerts.service_backends.slack.requests.post')
+    def test_slack_test_message_success_clears_failure_status(self, mock_post):
+        # Set up existing failure status
+        self.config.last_failure_timestamp = timezone.now()
+        self.config.last_failure_status_code = 500
+        self.config.last_failure_response_text = "Server Error"
+        self.config.save()
+
+        # Mock successful response
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.raise_for_status.return_value = None
+        mock_post.return_value = mock_response
+
+        # Send test message
+        slack_backend_send_test_message(
+            "https://hooks.slack.com/test",
+            "Test project",
+            "Test Slack",
+            self.config.id
+        )
+
+        # Verify failure status was cleared
+        self.config.refresh_from_db()
+        self.assertIsNone(self.config.last_failure_timestamp)
+        self.assertIsNone(self.config.last_failure_status_code)
+        self.assertIsNone(self.config.last_failure_response_text)
+
+    @patch('alerts.service_backends.slack.requests.post')
+    def test_slack_test_message_http_error_stores_failure(self, mock_post):
+        # Mock HTTP error response
+        mock_response = Mock()
+        mock_response.status_code = 404
+        mock_response.text = '{"error": "webhook_not_found"}'
+
+        # Create the HTTPError with response attached
+        http_error = requests.HTTPError()
+        http_error.response = mock_response
+        mock_response.raise_for_status.side_effect = http_error
+
+        mock_post.return_value = mock_response
+
+        # Send test message
+        slack_backend_send_test_message(
+            "https://hooks.slack.com/test",
+            "Test project",
+            "Test Slack",
+            self.config.id
+        )
+
+        # Verify failure status was stored
+        self.config.refresh_from_db()
+        self.assertIsNotNone(self.config.last_failure_timestamp)
+        self.assertEqual(self.config.last_failure_status_code, 404)
+        self.assertEqual(self.config.last_failure_response_text, '{"error": "webhook_not_found"}')
+        self.assertTrue(self.config.last_failure_is_json)
+        self.assertEqual(self.config.last_failure_error_type, "HTTPError")
+
+    @patch('alerts.service_backends.slack.requests.post')
+    def test_slack_test_message_non_json_error_stores_failure(self, mock_post):
+        # Mock HTTP error response with non-JSON text
+        mock_response = Mock()
+        mock_response.status_code = 500
+        mock_response.text = 'Internal Server Error'
+
+        # Create the HTTPError with response attached
+        http_error = requests.HTTPError()
+        http_error.response = mock_response
+        mock_response.raise_for_status.side_effect = http_error
+
+        mock_post.return_value = mock_response
+
+        # Send test message and expect it to raise
+        slack_backend_send_test_message(
+            "https://hooks.slack.com/test",
+            "Test project",
+            "Test Slack",
+            self.config.id
+        )
+
+        # Verify failure status was stored
+        self.config.refresh_from_db()
+        self.assertIsNotNone(self.config.last_failure_timestamp)
+        self.assertEqual(self.config.last_failure_status_code, 500)
+        self.assertEqual(self.config.last_failure_response_text, 'Internal Server Error')
+        self.assertFalse(self.config.last_failure_is_json)
+
+    @patch('alerts.service_backends.slack.requests.post')
+    def test_slack_test_message_connection_error_stores_failure(self, mock_post):
+        # Mock connection error
+        mock_post.side_effect = requests.ConnectionError("Connection failed")
+
+        # Send test message
+        slack_backend_send_test_message(
+            "https://hooks.slack.com/test",
+            "Test project",
+            "Test Slack",
+            self.config.id
+        )
+
+        # Verify failure status was stored
+        self.config.refresh_from_db()
+        self.assertIsNotNone(self.config.last_failure_timestamp)
+        self.assertIsNone(self.config.last_failure_status_code)  # No HTTP response
+        self.assertIsNone(self.config.last_failure_response_text)
+        self.assertIsNone(self.config.last_failure_is_json)
+        self.assertEqual(self.config.last_failure_error_type, "ConnectionError")
+        self.assertEqual(self.config.last_failure_error_message, "Connection failed")
+
+    @patch('alerts.service_backends.slack.requests.post')
+    def test_slack_alert_message_success_clears_failure_status(self, mock_post):
+        # Set up existing failure status
+        self.config.last_failure_timestamp = timezone.now()
+        self.config.last_failure_status_code = 500
+        self.config.save()
+
+        # Create issue
+        issue, _ = get_or_create_issue(project=self.project)
+
+        # Mock successful response
+        mock_response = Mock()
+        mock_response.status_code = 200
+        mock_response.raise_for_status.return_value = None
+        mock_post.return_value = mock_response
+
+        # Send alert message
+        slack_backend_send_alert(
+            "https://hooks.slack.com/test",
+            issue.id,
+            "New issue",
+            "a",
+            "NEW",
+            self.config.id
+        )
+
+        # Verify failure status was cleared
+        self.config.refresh_from_db()
+        self.assertIsNone(self.config.last_failure_timestamp)
+
+    def test_has_recent_failure_method(self):
+        # Initially no failure
+        self.assertFalse(self.config.has_recent_failure())
+
+        # Set failure
+        self.config.last_failure_timestamp = timezone.now()
+        self.config.save()
+        self.assertTrue(self.config.has_recent_failure())
+
+        # Clear failure
+        self.config.clear_failure_status()
+        self.config.save()
+        self.assertFalse(self.config.has_recent_failure())
diff --git a/bsmain/management/commands/__init__.py b/bsmain/management/commands/__init__.py
index e69de29..f0cacf8 100644
--- a/bsmain/management/commands/__init__.py
+++ b/bsmain/management/commands/__init__.py
@@ -0,0 +1,20 @@
+from django.db import models
+
+IGNORED_ATTRS = ['verbose_name', 'help_text']
+
+original_deconstruct = models.Field.deconstruct
+
+
+def new_deconstruct(self):
+    # works around the non-fix of https://code.djangoproject.com/ticket/21498 (I don't agree with the reasoning that
+    # "in principle any field could influence the database schema"; you must be _insane_ if verbose_name or help_text
+    # actually do, and the cost of the migrations is real)
+    # solution from https://stackoverflow.com/a/39801321/339144
+    name, path, args, kwargs = original_deconstruct(self)
+    for attr in IGNORED_ATTRS:
+        kwargs.pop(attr, None)
+    return name, path, args, kwargs
+
+
+def monkey_patch_deconstruct():
+    models.Field.deconstruct = new_deconstruct
diff --git a/bsmain/management/commands/fetch_event_schema_json.py b/bsmain/management/commands/fetch_event_schema_json.py
index a6fe33f..f4500c5 100644
--- a/bsmain/management/commands/fetch_event_schema_json.py
+++ b/bsmain/management/commands/fetch_event_schema_json.py
@@ -1,7 +1,9 @@
 import json
 import requests
 import fastjsonschema
-from subprocess import run, PIPE
+
+# no_bandit_expl: subprocess.run is used to call black in an interal utility script; it's just fine.
+from subprocess import run, PIPE  # nosec B404
 
 from django.conf import settings
 
@@ -28,7 +30,8 @@ class Command(BaseCommand):
     def handle(self, *args, **options):
         # Fetch the event schema JSON from the API and save it to disk
         json_result = requests.get(
-            "https://raw.githubusercontent.com/getsentry/sentry-data-schemas/main/relay/event.schema.json")
+            "https://raw.githubusercontent.com/getsentry/sentry-data-schemas/main/relay/event.schema.json",
+            timeout=10)
         json_result.raise_for_status()
 
         with open(settings.BASE_DIR / "api/event.schema.json", "w") as f:
@@ -36,7 +39,7 @@ class Command(BaseCommand):
 
         # Fetch the license from GitHub and save it to disk (with annotation about the source)
         license_url = "https://raw.githubusercontent.com/getsentry/sentry-data-schemas/main/LICENSE"
-        license_result = requests.get(license_url)
+        license_result = requests.get(license_url, timeout=10)
         license_result.raise_for_status()
 
         with open(settings.BASE_DIR / "api/LICENSE", "w") as f:
@@ -67,4 +70,5 @@ The source of this file is: %s
 
         # put it through 'black' to make it fit on screen at least, and perhaps to get useable diffs too.
         # (we don't bother putting it in requirements.txt, since it's used so rarely)
-        run(["black", settings.BASE_DIR / "bugsink/event_schema.py"], stdout=PIPE, stderr=PIPE)
+        # no_bandit_expl: subprocess.run is used to call black in an interal utility script; it's just fine.
+        run(["black", settings.BASE_DIR / "bugsink/event_schema.py"], stdout=PIPE, stderr=PIPE)  # nosec
diff --git a/bsmain/management/commands/makemigrations.py b/bsmain/management/commands/makemigrations.py
new file mode 100644
index 0000000..2cd10e7
--- /dev/null
+++ b/bsmain/management/commands/makemigrations.py
@@ -0,0 +1,8 @@
+from django.core.management.commands.makemigrations import Command as OriginalCommand
+
+from . import monkey_patch_deconstruct
+monkey_patch_deconstruct()
+
+
+class Command(OriginalCommand):
+    pass  # no changes, except the monkey patch above
diff --git a/bsmain/management/commands/migrate.py b/bsmain/management/commands/migrate.py
index 513b5c0..ff080de 100644
--- a/bsmain/management/commands/migrate.py
+++ b/bsmain/management/commands/migrate.py
@@ -1,6 +1,9 @@
 import time
 from django.core.management.commands.migrate import Command as DjangoMigrateCommand
 
+from . import monkey_patch_deconstruct
+monkey_patch_deconstruct()  # needed for migrate.py to avoid the warning about non-reflected changes
+
 
 class Command(DjangoMigrateCommand):
     # We override the default Django migrate command to add the elapsed time for each migration. (This could in theory
@@ -10,8 +13,7 @@ class Command(DjangoMigrateCommand):
     # We care more about the elapsed time for each migration than the average Django user because sqlite takes such a
     # prominent role in our architecture, and because migrations are run out of our direct control ("self hosted").
     #
-    # AFAIU, "just dropping a file called migrate.py in one of our apps" is good enough to be the override (and if it
-    # isn't, it's not critical, since all we do is add a bit more info to the output).
+    # AFAIU, "just dropping a file called migrate.py in one of our apps" is good enough to be the override.
 
     def migration_progress_callback(self, action, migration=None, fake=False):
         # Django 4.2's method, with a single change
diff --git a/bsmain/management/commands/send_json.py b/bsmain/management/commands/send_json.py
index 826f4e4..8460928 100644
--- a/bsmain/management/commands/send_json.py
+++ b/bsmain/management/commands/send_json.py
@@ -1,20 +1,19 @@
+import os
 import io
 import uuid
 import brotli
-import random
 
 import time
 import json
 import requests
 import jsonschema
 
-from django.core.management.base import BaseCommand
+from django.core.management.base import BaseCommand, CommandError
 from django.conf import settings
 
 from compat.dsn import get_store_url, get_envelope_url, get_header_value
 from bugsink.streams import compress_with_zlib, WBITS_PARAM_FOR_GZIP, WBITS_PARAM_FOR_DEFLATE
-
-from projects.models import Project
+from bugsink.utils import nc_rnd
 
 
 class Command(BaseCommand):
@@ -33,8 +32,8 @@ class Command(BaseCommand):
         parser.add_argument(
             "--x-forwarded-for", action="store",
             help="Set the X-Forwarded-For header to test whether your setup is properly ignoring it")
-        parser.add_argument("kind", action="store", help="The kind of object (filename, project, issue, event)")
-        parser.add_argument("identifiers", nargs="+")
+        parser.add_argument("--sent-at", action="store", default=None, help="Set the sent_at header to this value")
+        parser.add_argument("filenames", nargs="+")
 
     def is_valid(self, data, identifier):
         # In our (private) samples we often have this "_meta" field. I can't (quickly) find any documentation for it,
@@ -61,39 +60,31 @@ class Command(BaseCommand):
     def handle(self, *args, **options):
         compress = options['compress']
         use_envelope = not options['use_store_api']
-        dsn = options['dsn']
+
+        if options['dsn'] is None:
+            if os.environ.get("SENTRY_DSN"):
+                dsn = os.environ["SENTRY_DSN"]
+            else:
+                raise CommandError(
+                    "You must provide a DSN to send data to Sentry. Use --dsn or set SENTRY_DSN environment variable.")
+        else:
+            dsn = options['dsn']
 
         successfully_sent = []
 
-        kind = options["kind"]
+        for json_filename in options["filenames"]:
+            with open(json_filename) as f:
+                print("considering", json_filename)
+                try:
+                    data = json.loads(f.read())
+                except Exception as e:
+                    self.stderr.write("%s %s %s" % ("Not JSON", json_filename, str(e)))
+                    continue
 
-        if kind == "filename":
-            for json_filename in options["identifiers"]:
-                with open(json_filename) as f:
-                    print("considering", json_filename)
-                    try:
-                        data = json.loads(f.read())
-                    except Exception as e:
-                        self.stderr.write("%s %s %s" % ("Not JSON", json_filename, str(e)))
-                        continue
+                if self.send_to_server(dsn, options, json_filename, data, use_envelope, compress):
+                    successfully_sent.append(json_filename)
 
-                    if self.send_to_server(dsn, options, json_filename, data, use_envelope, compress):
-                        successfully_sent.append(json_filename)
-
-        elif kind == "project":
-            for project_id in options["identifiers"]:
-                print("considering", project_id)
-                project = Project.objects.get(pk=project_id)
-                for event in project.event_set.all():
-                    data = event.get_parsed_data()
-                    if self.send_to_server(dsn, options, str(event.id), data, use_envelope, compress):
-                        successfully_sent.append(event.id)
-
-        else:
-            self.stderr.write("Unknown kind of data %s" % kind)
-            exit(1)
-
-        print("Successfuly sent to server")
+        print("Successfuly sent to server:")
         for filename in successfully_sent:
             print(filename)
 
@@ -123,9 +114,9 @@ class Command(BaseCommand):
 
             # https://develop.sentry.dev/sdk/data-model/event-payloads/span/#attributes
             # > A random hex string with a length of 16 characters. [which is 8 bytes]
-            data["contexts"]["trace"]["span_id"] = random.getrandbits(64).to_bytes(8, byteorder='big').hex()
+            data["contexts"]["trace"]["span_id"] = nc_rnd.getrandbits(64).to_bytes(8, byteorder='big').hex()
             # > A random hex string with a length of 32 characters. [which is 16 bytes]
-            data["contexts"]["trace"]["trace_id"] = random.getrandbits(128).to_bytes(16, byteorder='big').hex()
+            data["contexts"]["trace"]["trace_id"] = nc_rnd.getrandbits(128).to_bytes(16, byteorder='big').hex()
 
         if options["tag"]:
             if "tags" not in data:
@@ -153,10 +144,14 @@ class Command(BaseCommand):
 
             data_bytes = json.dumps(data).encode("utf-8")
             if use_envelope:
-                # the smallest possible envelope:
                 event_id = data.get("event_id", uuid.uuid4().hex)
 
-                data_bytes = (b'{"event_id": "%s"}\n{"type": "event"}\n' % event_id.encode("utf-8") +
+                sent_at_snip = (b',"sent_at":"%s"' % options["sent_at"].encode("utf-8")) if options["sent_at"] else b""
+
+                # the smallest possible envelope:
+                data_bytes = (b'{"event_id":"%s"' % event_id.encode("utf-8") +
+                              sent_at_snip +
+                              b'}\n{"type":"event"}\n' +
                               data_bytes)
 
             if compress in ["gzip", "deflate"]:
@@ -176,6 +171,7 @@ class Command(BaseCommand):
                     get_envelope_url(dsn) if use_envelope else get_store_url(dsn),
                     headers=headers,
                     data=compressed_data,
+                    timeout=10,
                 )
 
             elif compress == "br":
@@ -187,6 +183,7 @@ class Command(BaseCommand):
                     get_envelope_url(dsn) if use_envelope else get_store_url(dsn),
                     headers=headers,
                     data=compressed_data,
+                    timeout=10,
                 )
 
             else:
@@ -197,6 +194,7 @@ class Command(BaseCommand):
                     get_envelope_url(dsn) if use_envelope else get_store_url(dsn),
                     headers=headers,
                     data=data_bytes,
+                    timeout=10,
                 )
 
             response.raise_for_status()
diff --git a/bsmain/management/commands/stress_test.py b/bsmain/management/commands/stress_test.py
index 2380881..db792a5 100644
--- a/bsmain/management/commands/stress_test.py
+++ b/bsmain/management/commands/stress_test.py
@@ -1,4 +1,3 @@
-import random
 import io
 import uuid
 import brotli
@@ -13,16 +12,17 @@ from django.core.management.base import BaseCommand
 
 from compat.dsn import get_envelope_url, get_header_value
 from bugsink.streams import compress_with_zlib, WBITS_PARAM_FOR_GZIP, WBITS_PARAM_FOR_DEFLATE
+from bugsink.utils import nc_rnd
 from issues.utils import get_values
 
 
 def random_postfix():
     # avoids numbers, because when usedd in the type I imagine numbers may at some point be ignored in the grouping.
-    random_number = random.random()
+    random_number = nc_rnd.random()
 
     if random_number < 0.1:
         # 10% of the time we simply sample from 1M to create a "fat tail".
-        unevenly_distributed_number = int(random.random() * 1_000_000)
+        unevenly_distributed_number = int(nc_rnd.random() * 1_000_000)
     else:
         unevenly_distributed_number = int(1 / random_number)
 
@@ -105,9 +105,9 @@ class Command(BaseCommand):
 
             # https://develop.sentry.dev/sdk/data-model/event-payloads/span/#attributes
             # > A random hex string with a length of 16 characters. [which is 8 bytes]
-            data["contexts"]["trace"]["span_id"] = random.getrandbits(64).to_bytes(8, byteorder='big').hex()
+            data["contexts"]["trace"]["span_id"] = nc_rnd.getrandbits(64).to_bytes(8, byteorder='big').hex()
             # > A random hex string with a length of 32 characters. [which is 16 bytes]
-            data["contexts"]["trace"]["trace_id"] = random.getrandbits(128).to_bytes(16, byteorder='big').hex()
+            data["contexts"]["trace"]["trace_id"] = nc_rnd.getrandbits(128).to_bytes(16, byteorder='big').hex()
 
         if options["tag"]:
             if "tags" not in data:
@@ -129,7 +129,7 @@ class Command(BaseCommand):
         data_bytes = json.dumps(data).encode("utf-8")
 
         # the smallest possible envelope:
-        data_bytes = (b'{"event_id": "%s"}\n{"type": "event"}\n' % (data["event_id"]).encode("utf-8") +
+        data_bytes = (b'{"event_id":"%s"}\n{"type":"event"}\n' % (data["event_id"]).encode("utf-8") +
                       data_bytes)
 
         if compress in ["gzip", "deflate"]:
@@ -153,7 +153,7 @@ class Command(BaseCommand):
         for compressed_data in compressed_datas.values():
             if self.stopping:
                 return
-            dsn = random.choice(dsns)
+            dsn = nc_rnd.choice(dsns)
 
             t0 = time.time()
             success = Command.send_to_server(dsn, options, compress, compressed_data)
@@ -179,6 +179,7 @@ class Command(BaseCommand):
                     get_envelope_url(dsn),
                     headers=headers,
                     data=compressed_data,
+                    timeout=10,
                 )
 
             elif compress == "br":
@@ -187,12 +188,14 @@ class Command(BaseCommand):
                     get_envelope_url(dsn),
                     headers=headers,
                     data=compressed_data,
+                    timeout=10,
                 )
 
             response = requests.post(
                 get_envelope_url(dsn),
                 headers=headers,
                 data=compressed_data,
+                timeout=10,
             )
             response.raise_for_status()
             return True
diff --git a/bsmain/templates/bsmain/auth_token_list.html b/bsmain/templates/bsmain/auth_token_list.html
index 1c069a6..623a723 100644
--- a/bsmain/templates/bsmain/auth_token_list.html
+++ b/bsmain/templates/bsmain/auth_token_list.html
@@ -1,7 +1,8 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
-{% block title %}Auth Tokens · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Auth Tokens" %} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -19,12 +20,12 @@
         {% endif %}
 
         <div class="flex">
-            <h1 class="text-4xl mt-4 font-bold">Auth Tokens</h1>
+            <h1 class="text-4xl mt-4 font-bold">{% translate "Auth Tokens" %}</h1>
 
             <div class="ml-auto mt-6">
                 <form action="{% url "auth_token_create" %}" method="post">
                 {% csrf_token %} {# margins display slightly different from the <a href version that I have for e.g. project memembers, but I don't care _that_ much #}
-                    <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Add Token</button>
+                    <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Add Token" %}</button>
                 </form>
             </div>
         </div>
@@ -37,7 +38,7 @@
           <tbody>
                 <thead>
                 <tr class="bg-slate-200 dark:bg-slate-800">
-                    <th class="w-full p-4 text-left text-xl" colspan="2">Auth Tokens</th>
+                    <th class="w-full p-4 text-left text-xl" colspan="2">{% translate "Auth Tokens" %}</th>
                 </tr>
 
                 {% for auth_token in auth_tokens %}
@@ -50,7 +51,7 @@
 
                 <td class="p-4">
                     <div class="flex justify-end">
-                        <button name="action" value="delete:{{ auth_token.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Delete</button>
+                        <button name="action" value="delete:{{ auth_token.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Delete" %}</button>
                     </div>
                 </td>
 
@@ -59,7 +60,7 @@
                 <tr class="bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-700 border-b-2">
                 <td class="w-full p-4">
                     <div>
-                        No Auth Tokens.
+                        {% translate "No Auth Tokens." %}
                     </div>
                 </td>
 
diff --git a/bsmain/views.py b/bsmain/views.py
index 27225ad..25be8d7 100644
--- a/bsmain/views.py
+++ b/bsmain/views.py
@@ -2,6 +2,7 @@ from django.shortcuts import render, redirect
 from django.http import Http404
 from django.contrib import messages
 from django.contrib.auth.decorators import user_passes_test
+from django.utils.translation import gettext_lazy as _
 
 from bugsink.decorators import atomic_for_request_method
 
@@ -20,7 +21,7 @@ def auth_token_list(request):
         if action == "delete":
             AuthToken.objects.get(pk=pk).delete()
 
-            messages.success(request, 'Token deleted')
+            messages.success(request, _('Token deleted'))
             return redirect('auth_token_list')
 
     return render(request, 'bsmain/auth_token_list.html', {
diff --git a/bugsink/app_settings.py b/bugsink/app_settings.py
index 0374017..fe68237 100644
--- a/bugsink/app_settings.py
+++ b/bugsink/app_settings.py
@@ -5,6 +5,7 @@ import os
 from contextlib import contextmanager
 
 from django.conf import settings
+from bugsink.utils import assert_
 
 
 _KIBIBYTE = 1024
@@ -59,6 +60,8 @@ DEFAULTS = {
     "MAX_EVENTS_PER_PROJECT_PER_5_MINUTES": 1_000,
     "MAX_EVENTS_PER_PROJECT_PER_HOUR": 5_000,
 
+    "MAX_EMAILS_PER_MONTH": None,  # None means "no limit"; for non-None values, the quota is per calendar month
+
     # I don't think Sentry specifies this one, but we do: given the spec 8KiB should be enough by an order of magnitude.
     "MAX_HEADER_SIZE": 8 * _KIBIBYTE,
 
@@ -125,7 +128,7 @@ def override_settings(**new_settings):
     _settings = AttrLikeDict()
     _settings.update(old_settings)
     for k in new_settings:
-        assert k in old_settings, "Unknown setting (likely error in tests): %s" % k
+        assert_(k in old_settings, "Unknown setting (likely error in tests): %s" % k)
     _settings.update(new_settings)
     yield
     _settings = old_settings
diff --git a/bugsink/conf_templates/docker.py.template b/bugsink/conf_templates/docker.py.template
index c7c4760..620a6c4 100644
--- a/bugsink/conf_templates/docker.py.template
+++ b/bugsink/conf_templates/docker.py.template
@@ -59,6 +59,12 @@ SNAPPEA = {
 
     "NUM_WORKERS": int(os.getenv("SNAPPEA_NUM_WORKERS", 2)),
     "STATS_RETENTION_MINUTES": int(os.getenv("SNAPPEA_STATS_RETENTION_MINUTES", 60 * 24 * 7)),
+
+    # in our Dockerfile the foreman is started exactly once (no check against collisions needed) and whaterver is
+    # running the container is responsible for the container's lifecycle (again: no pid-file check needed to avoid
+    # collisions)
+    "PID_FILE": None,
+
 }
 
 
diff --git a/bugsink/conf_templates/singleserver.py.template b/bugsink/conf_templates/singleserver.py.template
index c30b1dc..60804c6 100644
--- a/bugsink/conf_templates/singleserver.py.template
+++ b/bugsink/conf_templates/singleserver.py.template
@@ -43,7 +43,11 @@ SNAPPEA = {
     "TASK_ALWAYS_EAGER": False,
     "NUM_WORKERS": 4,
 
-    "PID_FILE": "{{ base_dir }}/snappea/snappea.pid",
+    "PID_FILE": None,
+    # alternatively (if you don't trust systemd to get at most one snappea foreman running; or if you don't use systemd
+    # at all), use the below:
+    # "PID_FILE": "{{ base_dir }}/snappea/snappea.pid",
+
     "WAKEUP_CALLS_DIR": "{{ base_dir }}/snappea/wakeup",
     "STATS_RETENTION_MINUTES": 60 * 24 * 7,
 }
diff --git a/bugsink/context_processors.py b/bugsink/context_processors.py
index 6c96408..172560e 100644
--- a/bugsink/context_processors.py
+++ b/bugsink/context_processors.py
@@ -1,8 +1,9 @@
+import json
 from datetime import timedelta
 from collections import namedtuple
 
-from django.conf import settings
 from django.utils import timezone
+from django.conf import settings
 from django.utils.safestring import mark_safe
 from django.urls import reverse
 from django.contrib.auth.models import AnonymousUser
@@ -21,10 +22,11 @@ from phonehome.models import Installation
 SystemWarning = namedtuple('SystemWarning', ['message', 'ignore_url'])
 
 
+# no_bandit_expl: literally a constant string so safe by defenition
 EMAIL_BACKEND_WARNING = mark_safe(
     """Email is not set up, emails won't be sent. To get the most out of Bugsink, please
     <a href="https://www.bugsink.com/docs/settings/#email" target="_blank" class="font-bold text-slate-800
-    dark:text-slate-100">set up email</a>.""")
+    dark:text-slate-100">set up email</a>.""")  # nosec
 
 
 def get_snappea_warnings():
@@ -119,6 +121,14 @@ def useful_settings_processor(request):
 
             system_warnings.append(SystemWarning(EMAIL_BACKEND_WARNING, ignore_url))
 
+        if get_settings().MAX_EMAILS_PER_MONTH is not None:
+            email_quota_usage = json.loads(installation.email_quota_usage)
+            this_month_usage = email_quota_usage.get("per_month", {}).get(timezone.now().strftime("%Y-%m"), 0)
+            if this_month_usage >= get_settings().MAX_EMAILS_PER_MONTH:
+                system_warnings.append(SystemWarning(
+                    f"Bugsink has sent {this_month_usage} emails this month, which is the maximum. "
+                    "No more emails will be sent until the 1st of next month.", None))
+
         return system_warnings + get_snappea_warnings()
 
     return {
diff --git a/bugsink/debug_views.py b/bugsink/debug_views.py
index 014d656..d3d2661 100644
--- a/bugsink/debug_views.py
+++ b/bugsink/debug_views.py
@@ -180,7 +180,8 @@ def _process_view_steps(middleware, request, wider_context):
 
     try:
         middleware._check_token(request)
-        result["_check_token"] = "OK"
+        # no_bandit_expl: bandit triggers on the word "token" here but this is not exposure of a secret token
+        result["_check_token"] = "OK"  # nosec
     except RejectRequest as e:
         result["_check_token"] = "FAILS WITH %s" % e.reason
         result["process_view"] = "FAILS at _check_token"
@@ -219,7 +220,8 @@ def csrf_debug(request):
             "META": {
                 k: request.META.get(k) for k in request.META.keys() if k.startswith("HTTP_")
             },
-            "SECURE_PROXY_SSL_HEADER": settings.SECURE_PROXY_SSL_HEADER[0] if settings.SECURE_PROXY_SSL_HEADER else None,
+            "SECURE_PROXY_SSL_HEADER":
+                settings.SECURE_PROXY_SSL_HEADER[0] if settings.SECURE_PROXY_SSL_HEADER else None,
 
             "process_view": _process_view_steps(middleware, request, context),
         })
diff --git a/gunicorn.docker.conf.py b/bugsink/gunicorn.docker.conf.py
similarity index 100%
rename from gunicorn.docker.conf.py
rename to bugsink/gunicorn.docker.conf.py
diff --git a/bugsink/middleware.py b/bugsink/middleware.py
index 3578fd3..7ebe665 100644
--- a/bugsink/middleware.py
+++ b/bugsink/middleware.py
@@ -5,6 +5,10 @@ from django.contrib.auth.decorators import login_required
 from django.db import connection
 from django.conf import settings
 from django.core.exceptions import SuspiciousOperation
+from django.utils.translation import get_supported_language_variant
+from django.utils.translation.trans_real import parse_accept_lang_header
+from django.utils import translation
+
 
 performance_logger = logging.getLogger("bugsink.performance.views")
 
@@ -128,3 +132,35 @@ class SetRemoteAddrMiddleware:
             request.META["REMOTE_ADDR"] = self.parse_x_forwarded_for(request.META.get("HTTP_X_FORWARDED_FOR", None))
 
         return self.get_response(request)
+
+
+def language_from_accept_language(request):
+    """
+    Pick a language using ONLY the Accept-Language header. Ignores URL prefixes, session, and cookies.  I prefer to have
+    as little "magic" in the language selection as possible, and I _know_ we don't do anything with paths, so I'd rather
+    not have such code invoked at all (at the cost of reimplementing some of Django's logic here).
+    """
+    header = request.META.get("HTTP_ACCEPT_LANGUAGE", "")
+    for lang_code, _q in parse_accept_lang_header(header):
+        try:
+            # strict=False lets country variants match (e.g. 'es-CO' for 'es')
+            return get_supported_language_variant(lang_code, strict=False)
+        except LookupError:
+            continue
+    return settings.LANGUAGE_CODE
+
+
+def get_chosen_language(request_user, request):
+    if request_user.is_authenticated and request_user.language != "auto":
+        return get_supported_language_variant(request_user.language, strict=False)
+    return language_from_accept_language(request)
+
+
+class UserLanguageMiddleware:
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        translation.activate(get_chosen_language(request.user, request))
+        response = self.get_response(request)
+        return response
diff --git a/bugsink/settings/default.py b/bugsink/settings/default.py
index 40fcbc7..f4881fe 100644
--- a/bugsink/settings/default.py
+++ b/bugsink/settings/default.py
@@ -106,6 +106,10 @@ MIDDLEWARE = [
 
     'bugsink.middleware.LoginRequiredMiddleware',
 
+    # note on ordering: we need request.user, so after AuthenticationMiddleware; and we're not tied to "before
+    # CommonMiddleware" as django.middleware.locale.LocaleMiddleware is, because we don't do path-related stuff.
+    'bugsink.middleware.UserLanguageMiddleware',
+
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
 
@@ -244,6 +248,14 @@ TIME_ZONE = 'Europe/Amsterdam'
 
 USE_I18N = True
 
+USE_L10N = True
+
+LOCALE_PATHS = [BASE_DIR / "locale"]
+LANGUAGES = (
+    ("en", "English"),
+    ("zh-hans", "简体中文"),
+)
+
 USE_TZ = True
 
 
diff --git a/bugsink/settings/development.py b/bugsink/settings/development.py
index a9c2c26..31ea1c9 100644
--- a/bugsink/settings/development.py
+++ b/bugsink/settings/development.py
@@ -3,12 +3,15 @@ from .default import BASE_DIR, LOGGING, DATABASES, I_AM_RUNNING
 
 import os
 
+from django.utils._os import safe_join
 from sentry_sdk_extensions.transport import MoreLoudlyFailingTransport
 
 from bugsink.utils import deduce_allowed_hosts, eat_your_own_dogfood
 
 
-SECRET_KEY = 'django-insecure-$@clhhieazwnxnha-_zah&(bieq%yux7#^07&xsvhn58t)8@xw'
+# no_bandit_expl: _development_ settings, we know that this is insecure; would fail to deploy in prod if (as configured)
+# the django checks (with --check --deploy) are run.
+SECRET_KEY = 'django-insecure-$@clhhieazwnxnha-_zah&(bieq%yux7#^07&xsvhn58t)8@xw'  # nosec B105
 DEBUG = True
 
 
@@ -61,6 +64,7 @@ if not I_AM_RUNNING == "TEST":
 SNAPPEA = {
     "TASK_ALWAYS_EAGER": True,  # at least for (unit) tests, this is a requirement
     "NUM_WORKERS": 1,
+    "PID_FILE": "/tmp/snappea.pid",  # for development: a thing to 'tune' to None to test the no-pid-check branches.
 }
 
 EMAIL_HOST = os.getenv("EMAIL_HOST")
@@ -98,6 +102,8 @@ BUGSINK = {
     "MAX_EVENTS_PER_PROJECT_PER_5_MINUTES": 1_000_000,
     "MAX_EVENTS_PER_PROJECT_PER_HOUR": 50_000_000,
 
+    "MAX_EMAILS_PER_MONTH": 10,  # for development: a thing to tune if you want to the the quota system
+
     "KEEP_ARTIFACT_BUNDLES": True,  # in development: useful to preserve sourcemap uploads
 }
 
@@ -107,7 +113,7 @@ if not I_AM_RUNNING == "TEST":
         "local_flat_files": {
             "STORAGE": "events.storage.FileEventStorage",
             "OPTIONS": {
-                "basepath": os.path.join(BASE_DIR, "filestorage"),
+                "basepath": safe_join(BASE_DIR, "filestorage"),
             },
             "USE_FOR_WRITE": True,
         },
diff --git a/bugsink/streams.py b/bugsink/streams.py
index 6472a44..295fa56 100644
--- a/bugsink/streams.py
+++ b/bugsink/streams.py
@@ -3,6 +3,7 @@ import io
 import brotli
 
 from bugsink.app_settings import get_settings
+from bugsink.utils import assert_
 
 
 DEFAULT_CHUNK_SIZE = 8 * 1024
@@ -46,7 +47,7 @@ def brotli_generator(input_stream, chunk_size=DEFAULT_CHUNK_SIZE):
 
         yield decompressor.process(compressed_chunk)
 
-    assert decompressor.is_finished()
+    assert_(decompressor.is_finished())
 
 
 class GeneratorReader:
diff --git a/bugsink/tests.py b/bugsink/tests.py
index 7dbcb02..27f3781 100644
--- a/bugsink/tests.py
+++ b/bugsink/tests.py
@@ -7,13 +7,20 @@ from unittest import TestCase as RegularTestCase
 from django.test import TestCase as DjangoTestCase
 from django.test import override_settings
 from django.core.exceptions import SuspiciousOperation
+from django.contrib.auth import get_user_model
+from django.test.utils import CaptureQueriesContext
+from django.db import connection
 from .wsgi import allowed_hosts_error_message
 
+from .test_utils import TransactionTestCase25251 as TransactionTestCase
+from .transaction import immediate_atomic
 from .volume_based_condition import VolumeBasedCondition
 from .streams import (
     compress_with_zlib, GeneratorReader, WBITS_PARAM_FOR_GZIP, WBITS_PARAM_FOR_DEFLATE, MaxDataReader,
     MaxDataWriter, zlib_generator, brotli_generator)
 
+User = get_user_model()
+
 
 def apply_n(f, n, v):
     for i in range(n):
@@ -421,3 +428,25 @@ class AllowedHostsMsgTestCase(DjangoTestCase):
             "'Host: teeestserver' as sent by browser/proxy not in ALLOWED_HOSTS=['testserver']. "
             "Add 'teeestserver' to ALLOWED_HOSTS or configure proxy to use 'Host: testserver'.",
             allowed_hosts_error_message("teeestserver", ["testserver"]))
+
+
+class TestAtomicTransactions(TransactionTestCase):
+
+    def test_only_if_needed(self):
+        with CaptureQueriesContext(connection) as queries_context:
+            with immediate_atomic(only_if_needed=True):
+                User.objects.create(username="testuser", password="testpass")
+
+        self.assertTrue(User.objects.filter(username="testuser").exists())
+        self.assertEqual([1], [1 for q in queries_context.captured_queries if q['sql'].startswith("BEGIN")])
+        self.assertEqual([1], [1 for q in queries_context.captured_queries if q['sql'].startswith("COMMIT")])
+
+        with CaptureQueriesContext(connection) as queries_context:
+            with immediate_atomic(only_if_needed=True):
+                with immediate_atomic(only_if_needed=True):
+                    with immediate_atomic(only_if_needed=True):
+                        User.objects.create(username="testuser2", password="testpass2")
+
+        self.assertTrue(User.objects.filter(username="testuser2").exists())
+        self.assertEqual([1], [1 for q in queries_context.captured_queries if q['sql'].startswith("BEGIN")])
+        self.assertEqual([1], [1 for q in queries_context.captured_queries if q['sql'].startswith("COMMIT")])
diff --git a/bugsink/transaction.py b/bugsink/transaction.py
index 5129e58..29e5c2d 100644
--- a/bugsink/transaction.py
+++ b/bugsink/transaction.py
@@ -192,8 +192,10 @@ class ImmediateAtomic(SuperDurableAtomic):
 
 
 @contextmanager
-def immediate_atomic(using=None, savepoint=True, durable=True):
+def immediate_atomic(using=None, savepoint=True, only_if_needed=False):
     # this is the Django 4.2 db.transaction.atomic, but using ImmediateAtomic, and with durable=True by default
+    # only_if_needed is useful if you want to wrap some code in an as tight-as-possible transaction to avoid hogging the
+    # global write lock, while not worrying about whether the code is already in a transaction or not.
 
     # the following assertion is because "BEGIN IMMEDIATE" supposes a "BEGIN" (of a transaction), i.e. has no meaning
     # when this wrapper is not the outermost one.
@@ -201,8 +203,15 @@ def immediate_atomic(using=None, savepoint=True, durable=True):
     # Side-note: the parameter `savepoint` is a bit of a misnomer, it is not about "is the current thing a savepoint",
     # but rather, "are savepoints allowed inside the current context". (The former would imply that it could never be
     # combined with durable=True, which is not the case.)
-    assert durable, "immediate_atomic should always be used with durable=True"
+
+    durable = True  # for the cases where only_if_needed is False or not applicable (i.e. 'needed') durable=True.
+
     using = DEFAULT_DB_ALIAS if using is None else using  # harmonize to "default" at the top for downstream lookups
+    connection = django_db_transaction.get_connection(using)
+
+    if only_if_needed and connection.in_atomic_block:
+        yield
+        return
 
     if callable(using):
         immediate_atomic = ImmediateAtomic(DEFAULT_DB_ALIAS, savepoint, durable)(using)
diff --git a/bugsink/utils.py b/bugsink/utils.py
index def5795..6a64e05 100644
--- a/bugsink/utils.py
+++ b/bugsink/utils.py
@@ -1,6 +1,9 @@
+import random
+import logging
 from collections import defaultdict
 from urllib.parse import urlparse
 
+from django.utils import timezone
 from django.core.mail import EmailMultiAlternatives
 from django.template.loader import get_template
 from django.apps import apps
@@ -8,8 +11,25 @@ from django.db.models import ForeignKey, F
 
 from .version import version
 
+# alias for the random module that is explicitly used in "non-cryptographic" contexts; this is a utility to avoid false
+# positives in (bandit) security scans that complain about the use of `random`; by flagging a use as "non-cryptographic"
+# we avoid sprinkling `nosec` (and their explanations) all over the codebase.
+nc_rnd = random
+
+logger = logging.getLogger("bugsink.email")
+
 
 def send_rendered_email(subject, base_template_name, recipient_list, context=None):
+    from phonehome.models import Installation
+
+    if not Installation.check_and_inc_email_quota(timezone.now()):
+        logger.warning(
+            "Email quota exceeded; not sending email with subject '%s' to %s",
+            subject,
+            recipient_list,
+        )
+        return
+
     if context is None:
         context = {}
 
@@ -299,7 +319,7 @@ def delete_deps_with_budget(project_id, referring_model, fk_name, referred_ids,
 
     my_num_deleted, del_d = referring_model.objects.filter(pk__in=[d['pk'] for d in relevant_ids_after_rec]).delete()
     num_deleted += my_num_deleted
-    assert set(del_d.keys()) == {referring_model._meta.label}  # assert no-cascading (we do that ourselves)
+    assert_(set(del_d.keys()) == {referring_model._meta.label})  # assert no-cascading (we do that ourselves)
 
     if is_for_project:
         # short-circuit: project-deletion implies "no orphans" because the project kill everything with it.
@@ -311,3 +331,11 @@ def delete_deps_with_budget(project_id, referring_model, fk_name, referred_ids,
     prune_orphans(referring_model, relevant_ids_after_rec)
 
     return num_deleted
+
+
+def assert_(condition, message=None):
+    """Replacement for the `assert` statement as a function. Avoids the (possibly optimized-out) assert statement."""
+    if not condition:
+        if message is None:
+            raise AssertionError()
+        raise AssertionError(message)
diff --git a/builddocker.bash b/builddocker.bash
index 3363228..decbdce 100755
--- a/builddocker.bash
+++ b/builddocker.bash
@@ -21,9 +21,44 @@ if [[ $WHEEL_FILE == *"dev"* ]]; then
     TAGS="-t bugsink/bugsink:dev"
 else
     VERSION=$(echo $WHEEL_FILE | cut -d'-' -f2)
-    TAGS="-t bugsink/bugsink:$VERSION -t bugsink/bugsink:$(echo $VERSION | awk -F. '{print $1"."$2}') -t bugsink/bugsink:$(echo $VERSION | awk -F. '{print $1}') -t bugsink/bugsink:latest -t bugsink/bugsink"
-    echo "This is a non-dev version, tags will be added: $TAGS"
+
+    REPO="bugsink/bugsink"
+
+    # numeric tags for this build
+    TAG_LIST=(
+      "$REPO:$VERSION"
+      "$REPO:$(echo "$VERSION" | awk -F. '{print $1"."$2}')"
+      "$REPO:$(echo "$VERSION" | awk -F. '{print $1}')"
+    )
+
+    # Find highest published semver on Docker Hub (public repo; no auth needed)
+    HIGHEST_PUBLISHED=$(
+      curl -fsSL "https://hub.docker.com/v2/repositories/${REPO}/tags?page_size=100" \
+      | grep -o '"name":"[^"]*"' \
+      | cut -d'"' -f4 \
+      | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' \
+      | sort -V \
+      | tail -n1
+    )
+
+    # Decide whether we’re allowed to move :latest forward
+    ADD_LATEST=true
+    if [[ -n "$HIGHEST_PUBLISHED" ]]; then
+      # if VERSION < HIGHEST_PUBLISHED, do NOT set :latest
+      top=$(printf '%s\n%s\n' "$HIGHEST_PUBLISHED" "$VERSION" | sort -V | tail -n1)
+      if [[ "$top" != "$VERSION" ]]; then
+        ADD_LATEST=false
+        echo "Not tagging :latest: $VERSION < already published $HIGHEST_PUBLISHED"
+      fi
+    fi
+
+    # Build TAGS string
+    TAGS=""
+    for t in "${TAG_LIST[@]}"; do TAGS+=" -t $t"; done
+    if $ADD_LATEST; then
+      TAGS+=" -t $REPO:latest -t $REPO"
+      echo "Tagging as latest: $VERSION ≥ ${HIGHEST_PUBLISHED:-<none>}"
+    fi
 fi
 
-
 docker build -f Dockerfile.fromwheel --build-arg WHEEL_FILE=$WHEEL_FILE $TAGS .
diff --git a/buildxdocker.bash b/buildxdocker.bash
index c69cf31..bcd7a40 100755
--- a/buildxdocker.bash
+++ b/buildxdocker.bash
@@ -21,8 +21,44 @@ if [[ $WHEEL_FILE == *"dev"* ]]; then
     TAGS="-t bugsink/bugsink:dev"
 else
     VERSION=$(echo $WHEEL_FILE | cut -d'-' -f2)
-    TAGS="-t bugsink/bugsink:$VERSION -t bugsink/bugsink:$(echo $VERSION | awk -F. '{print $1"."$2}') -t bugsink/bugsink:$(echo $VERSION | awk -F. '{print $1}') -t bugsink/bugsink:latest -t bugsink/bugsink"
-    echo "This is a non-dev version, tags will be added: $TAGS"
+
+    REPO="bugsink/bugsink"
+
+    # numeric tags for this build
+    TAG_LIST=(
+      "$REPO:$VERSION"
+      "$REPO:$(echo "$VERSION" | awk -F. '{print $1"."$2}')"
+      "$REPO:$(echo "$VERSION" | awk -F. '{print $1}')"
+    )
+
+    # Find highest published semver on Docker Hub (public repo; no auth needed)
+    HIGHEST_PUBLISHED=$(
+      curl -fsSL "https://hub.docker.com/v2/repositories/${REPO}/tags?page_size=100" \
+      | grep -o '"name":"[^"]*"' \
+      | cut -d'"' -f4 \
+      | grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' \
+      | sort -V \
+      | tail -n1
+    )
+
+    # Decide whether we’re allowed to move :latest forward
+    ADD_LATEST=true
+    if [[ -n "$HIGHEST_PUBLISHED" ]]; then
+      # if VERSION < HIGHEST_PUBLISHED, do NOT set :latest
+      top=$(printf '%s\n%s\n' "$HIGHEST_PUBLISHED" "$VERSION" | sort -V | tail -n1)
+      if [[ "$top" != "$VERSION" ]]; then
+        ADD_LATEST=false
+        echo "Not tagging :latest: $VERSION < already published $HIGHEST_PUBLISHED"
+      fi
+    fi
+
+    # Build TAGS string
+    TAGS=""
+    for t in "${TAG_LIST[@]}"; do TAGS+=" -t $t"; done
+    if $ADD_LATEST; then
+      TAGS+=" -t $REPO:latest -t $REPO"
+      echo "Tagging as latest: $VERSION ≥ ${HIGHEST_PUBLISHED:-<none>}"
+    fi
 fi
 
 
diff --git a/compat/dsn.py b/compat/dsn.py
index 561ebaa..e7a33c1 100644
--- a/compat/dsn.py
+++ b/compat/dsn.py
@@ -1,4 +1,5 @@
 import urllib.parse
+from bugsink.utils import assert_
 
 
 def _colon_port(port):
@@ -8,8 +9,9 @@ def _colon_port(port):
 def build_dsn(base_url, project_id, public_key):
     parts = urllib.parse.urlsplit(base_url)
 
-    assert parts.scheme in ("http", "https"), "The BASE_URL setting must be a valid URL (starting with http or https)."
-    assert parts.hostname, "The BASE_URL setting must be a valid URL. The hostname must be set."
+    assert_(
+        parts.scheme in ("http", "https"), "The BASE_URL setting must be a valid URL (starting with http or https).")
+    assert_(parts.hostname, "The BASE_URL setting must be a valid URL. The hostname must be set.")
 
     return (f"{ parts.scheme }://{ public_key }@{ parts.hostname }{ _colon_port(parts.port) }" +
             f"{ parts.path }/{ project_id }")
@@ -58,3 +60,18 @@ def get_header_value(sentry_dsn):
 def get_sentry_key(sentry_dsn):
     parts = urllib.parse.urlsplit(sentry_dsn)
     return parts.username
+
+
+def validate_sentry_dsn(sentry_dsn):
+    parts = urllib.parse.urlsplit(sentry_dsn)
+
+    if not parts.scheme or not parts.hostname or not parts.username:
+        raise ValueError("Invalid Sentry DSN format. It must contain a scheme, hostname, and public_key.")
+
+    if parts.scheme not in ("http", "https"):
+        raise ValueError("Invalid Sentry DSN scheme. It must be 'http' or 'https'.")
+
+    if (not parts.path) or ("/" not in parts.path) or (not parts.path.rsplit("/", 1)[1]):
+        raise ValueError("Invalid DSN: path must include '/<project_id>'")
+
+    return True
diff --git a/compat/timestamp.py b/compat/timestamp.py
index d0ee0f5..f9657e3 100644
--- a/compat/timestamp.py
+++ b/compat/timestamp.py
@@ -1,6 +1,7 @@
 import datetime
 
 from django.utils.dateparse import parse_datetime
+from bugsink.utils import assert_
 
 
 def parse_timestamp(value):
@@ -25,7 +26,7 @@ def parse_timestamp(value):
 def format_timestamp(value):
     """the reverse of parse_timestamp"""
 
-    assert isinstance(value, datetime.datetime)
-    assert value.tzinfo == datetime.timezone.utc
+    assert_(isinstance(value, datetime.datetime))
+    assert_(value.tzinfo == datetime.timezone.utc)
 
     return value.isoformat()
diff --git a/ee/tenants/utils.py b/ee/tenants/utils.py
index 3fcd3f7..69e63f5 100644
--- a/ee/tenants/utils.py
+++ b/ee/tenants/utils.py
@@ -1,11 +1,12 @@
 from contextlib import contextmanager
 
 from .base import get_tenant_subdomain, use_tenant_subdomain
+from bugsink.utils import assert_
 
 
 def add_tenant_subdomain_to_kwargs():
     tenant_subdomain = get_tenant_subdomain()
-    assert tenant_subdomain is not None, "Must have tenant set to be able to pass this to snappea"
+    assert_(tenant_subdomain is not None, "Must have tenant set to be able to pass this to snappea")
     return {"TENANT_SUBDOMAIN": tenant_subdomain}
 
 
diff --git a/events/retention.py b/events/retention.py
index 53c1dad..c3162c7 100644
--- a/events/retention.py
+++ b/events/retention.py
@@ -1,10 +1,10 @@
 import logging
 from django.db.models import Q, Min, Max, Count
 
-from random import random
 from datetime import timezone, datetime
 
 from bugsink.moreiterutils import pairwise, map_N_until
+from bugsink.utils import assert_, nc_rnd
 from performance.context_managers import time_and_query_count
 
 from .storage_registry import get_storage
@@ -38,7 +38,7 @@ def get_epoch(datetime_obj):
     # in the search for a cut-off value for the total irrelevance, so it doesn't matter in the end.)
 
     # assuming we use model fields this 'just works' because Django's stores its stuff in timezone-aware UTC in the DB.
-    assert datetime_obj.tzinfo == timezone.utc
+    assert_(datetime_obj.tzinfo == timezone.utc)
 
     return int(datetime_obj.timestamp() / 3600)
 
@@ -85,8 +85,8 @@ def get_random_irrelevance(stored_event_count):
     """
     # assert as a tripwire to check our assumptions; note that the actual calculation actually "succeeds" for < 1, but
     # it becomes non-sensical, so I'd rather have it fail. The present event is part of the count, i.e. always >= 1
-    assert stored_event_count >= 1
-    return nonzero_leading_bits(round(random() * stored_event_count * 2))
+    assert_(stored_event_count >= 1)
+    return nonzero_leading_bits(round(nc_rnd.random() * stored_event_count * 2))
 
 
 def should_evict(project, timestamp, stored_event_count):
diff --git a/events/storage.py b/events/storage.py
index e4ea48f..226f544 100644
--- a/events/storage.py
+++ b/events/storage.py
@@ -1,7 +1,10 @@
+import uuid
 import contextlib
 import os.path
 from pathlib import Path
 
+from django.utils._os import safe_join
+
 
 class EventStorage(object):
 
@@ -41,7 +44,13 @@ class FileEventStorage(EventStorage):
     def _event_path(self, event_id):
         # the dashes in uuid are preserved in the filename for readability; since their location is consistent, this is
         # not a problem.
-        return os.path.join(self.basepath, str(event_id) + ".json")
+
+        # event_id comes from event.id, i.e. it's a UUID object which is generated by Bugsink itself (i.e. trusted).
+        # In addition, the UUID check ensures path safety independently of call-sites _and_ safe_join is used.
+        if not isinstance(event_id, uuid.UUID):
+            raise ValueError("event_id must be a UUID")
+
+        return safe_join(self.basepath, str(event_id) + ".json")
 
     @contextlib.contextmanager
     def open(self, event_id, mode='r'):
diff --git a/events/utils.py b/events/utils.py
index 382b2fd..e79ed2c 100644
--- a/events/utils.py
+++ b/events/utils.py
@@ -6,6 +6,7 @@ import sourcemap
 from issues.utils import get_values
 
 from bugsink.transaction import delay_on_commit
+from bugsink.utils import assert_
 
 from compat.timestamp import format_timestamp
 
@@ -73,7 +74,7 @@ def annotate_var_with_meta(var, meta_var):
     """
     'var' is a (potentially trimmed) list or dict, 'meta_var' is a dict describing the trimming.
     """
-    assert isinstance(var, (list, dict, str))
+    assert_(isinstance(var, (list, dict, str)))
 
     if isinstance(var, list):
         Incomplete = IncompleteList
diff --git a/files/tasks.py b/files/tasks.py
index bc52941..a193708 100644
--- a/files/tasks.py
+++ b/files/tasks.py
@@ -46,7 +46,8 @@ def assemble_artifact_bundle(bundle_checksum, chunk_checksums):
         for filename, manifest_entry in manifest["files"].items():
             file_data = bundle_zip.read(filename)
 
-            checksum = sha1(file_data).hexdigest()
+            # usedforsecurity=false: sha1 is not used cryptographically, it's part of the protocol, so we use it as is.
+            checksum = sha1(file_data, usedforsecurity=False).hexdigest()
 
             filename = basename(manifest_entry.get("url", filename))[:255]
 
@@ -112,7 +113,8 @@ def assemble_file(checksum, chunk_checksums, filename):
     chunks_in_order = [chunks_dicts[checksum] for checksum in chunk_checksums]  # implicitly checks chunk availability
     data = b"".join([chunk.data for chunk in chunks_in_order])
 
-    if sha1(data).hexdigest() != checksum:
+    # usedforsecurity=false: sha1 is not used cryptographically, and it's part of the protocol, so we use it as is.
+    if sha1(data, usedforsecurity=False).hexdigest() != checksum:
         raise Exception("checksum mismatch")
 
     result = File.objects.get_or_create(
diff --git a/files/views.py b/files/views.py
index 0508d71..3b2e5eb 100644
--- a/files/views.py
+++ b/files/views.py
@@ -162,7 +162,8 @@ def chunk_upload(request, organization_slug):
     for chunk in chunks:
         data = chunk.getvalue()
 
-        if sha1(data).hexdigest() != chunk.name:
+        # usedforsecurity=False: sha1 is not used cryptographically, and it's part of the protocol, so we use it as is.
+        if sha1(data, usedforsecurity=False).hexdigest() != chunk.name:
             raise Exception("checksum mismatch")
 
         with immediate_atomic():  # a snug fit around the only DB-writing thing we do here to ensure minimal blocking
@@ -208,6 +209,13 @@ def download_file(request, checksum):
 
 @csrf_exempt
 def api_catch_all(request, subpath):
+    # This is a catch-all for unimplemented API endpoints. It logs the request details and raises a 404 (if
+    # API_LOG_UNIMPLEMENTED_CALLS is set).
+
+    # the existance of this view (and the associated URL pattern) has the effect of `APPEND_SLASH=False` for our API
+    # endpoints, which is a good thing: for API enpoints you generally don't want this kind of magic (explicit breakage
+    # is desirable for APIs, and redirects don't even work for POST/PUT data)
+
     if not get_settings().API_LOG_UNIMPLEMENTED_CALLS:
         raise Http404("Unimplemented API endpoint: /api/" + subpath)
 
diff --git a/ingest/event_counter.py b/ingest/event_counter.py
index 4f5c6b0..89da457 100644
--- a/ingest/event_counter.py
+++ b/ingest/event_counter.py
@@ -3,6 +3,7 @@ from datetime import timezone, datetime
 from django.db.models import Min
 
 from bugsink.period_utils import add_periods_to_datetime, sub_periods_from_datetime
+from bugsink.utils import assert_
 
 
 def _filter_for_periods(qs, period_name, nr_of_periods, now):
@@ -28,7 +29,7 @@ def check_for_thresholds(qs, now, thresholds, add_for_current=0):
     # The only relevant cost that this mechanism thus adds is the per-project counting of digested events.
 
     # we only allow UTC, and we generally use Django model fields, which are UTC, so this should be good:
-    assert now.tzinfo == timezone.utc
+    assert_(now.tzinfo == timezone.utc)
 
     states = []
 
diff --git a/ingest/exceptions.py b/ingest/exceptions.py
new file mode 100644
index 0000000..831cca9
--- /dev/null
+++ b/ingest/exceptions.py
@@ -0,0 +1,2 @@
+class ParseError(Exception):
+    pass
diff --git a/ingest/filestore.py b/ingest/filestore.py
index 6a575ea..b8737cf 100644
--- a/ingest/filestore.py
+++ b/ingest/filestore.py
@@ -1,4 +1,6 @@
-import os
+import uuid
+
+from django.utils._os import safe_join
 from bugsink.app_settings import get_settings
 
 
@@ -7,4 +9,10 @@ def get_filename_for_event_id(event_id):
     # implemented. However, counterpoint: when doing stress tests, it was quite hard to get a serious backlog going
     # (snappea was very well able to play catch-up). So this might not be necessary.
 
-    return os.path.join(get_settings().INGEST_STORE_BASE_DIR, event_id)
+    # ensure that event_id is a uuid, and remove dashes if present; also doubles as a security-check (event_id is
+    # user-provided (but at this point already validated to be a valid UUID), but b/c of the below the
+    # security-implications of path-joining (even though we use safe_join) can be understood right here in the code
+    # without needing to inspect all call-sites)
+    event_id_normalized = uuid.UUID(event_id).hex
+
+    return safe_join(get_settings().INGEST_STORE_BASE_DIR, event_id_normalized)
diff --git a/ingest/header_validators.py b/ingest/header_validators.py
new file mode 100644
index 0000000..cda5bd6
--- /dev/null
+++ b/ingest/header_validators.py
@@ -0,0 +1,145 @@
+import re
+from datetime import datetime
+
+from compat.dsn import validate_sentry_dsn
+from .exceptions import ParseError
+
+
+# Based on the documentation here:
+#
+#   https://develop.sentry.dev/sdk/data-model/envelopes/
+#   https://develop.sentry.dev/sdk/data-model/envelope-items/
+#
+# From the docs, we deduced validation for
+#
+# * envelope headers -> all of them
+# * item headers -> only those that are relevant for "event" items
+
+
+_RFC3339_Z = re.compile(r"^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(?:\.\d{1,9})?(Z|\+00:00)$")
+_UUID32 = re.compile(r"^[0-9a-fA-F]{32}$")
+_UUID36 = re.compile(r"^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$")
+
+
+def validate_dsn(v):
+    try:
+        validate_sentry_dsn(v)
+    except ValueError as e:
+        raise ParseError(f'Envelope header "dsn" invalid: {e}')
+
+
+def validate_sdk(v):
+    if not isinstance(v, dict):
+        raise ParseError('Envelope header "sdk" must be an object')
+
+
+def validate_sent_at(v):
+    if not isinstance(v, str) or not _RFC3339_Z.match(v):
+        raise ParseError('Envelope header "sent_at" must be an RFC3339 UTC timestamp.')
+
+    try:
+        # Convert Z to +00:00 for isoformat compatibility
+        if v.endswith("Z"):
+            v = v[:-1] + "+00:00"
+
+        # Truncate fractional seconds to 6 digits (Python's datetime.fromisoformat supports up to 6 digits)
+        v = re.sub(
+            r"(\.\d{1,6})\d*(\+00:00)$",  # keep only first 6 digits before +00:00
+            r"\1\2",
+            v
+        )
+        return datetime.fromisoformat(v)
+    except ValueError as e:
+        raise ParseError('Envelope header "sent_at" is not a valid RFC3339 timestamp.') from e
+
+
+def validate_event_id(v):
+    if not isinstance(v, str) or not (_UUID32.match(v) or _UUID36.match(v)):
+        raise ParseError('Envelope header "event_id" must be a valid UUID string.')
+
+
+envelope_validators = {
+    "dsn": validate_dsn,
+    "sdk": validate_sdk,
+    "sent_at": validate_sent_at,
+    "event_id": validate_event_id,
+}
+
+
+def validate_envelope_headers(headers):
+    for key, val in headers.items():
+        if key in envelope_validators:
+            envelope_validators[key](val)
+
+
+def filter_valid_envelope_headers(headers):
+    result = {}
+
+    for key, val in headers.items():
+        if key in envelope_validators:  # this implies that only known headers remain
+            try:
+                envelope_validators[key](val)
+                result[key] = val
+            except Exception:
+                # no_bandit_expl: try/except/pass over a very small piece of code is fine (though we _could_ rewrite
+                # the validators into true/false shape to avoid this too)
+                pass  # nosec B110
+
+    return result
+
+
+ALLOWED_TYPES = {
+    "event", "transaction", "attachment", "session", "sessions", "feedback", "user_report", "client_report",
+    "replay_event", "replay_recording", "profile", "profile_chunk", "check_in", "log", "otel_log"
+}
+
+
+def validate_type(v):
+    return
+    # alternatively (1):
+    # if v not in _allowed_types:
+    # Sentry's protocol might add new item types in the future; we don't want to raise an error for those.
+    # logger.warning(f'Item header "type" is not recognized: {v}.'
+    #
+    # alternatively (2):
+    # raise ParseError(f'Item header "type" must be one of {_allowed_types}, got: {v}')
+
+
+def _validate_length(v):
+    if not isinstance(v, int) or v < 0:
+        raise ParseError('Item header "length" must be a non-negative integer.')
+
+
+item_validators = {
+    "type": validate_type,
+    "length": _validate_length,
+}
+
+
+def validate_item_headers(headers):
+    if headers.get("type") != "event":
+        # Only validate item headers for events. Reason: it's the only type of event that we actually process; rather
+        # than trying to keep the validation in sync with for a part of the protocol that we don't use, we skip it.
+        return
+
+    for key, val in headers.items():
+        if key in item_validators:
+            item_validators[key](val)
+
+
+def filter_valid_item_headers(headers):
+    if headers.get("type") != "event":
+        return headers  # or {} if you want to remove all item headers
+
+    result = {}
+    for key, val in headers.items():
+        if key in item_validators:  # this implies that only known headers remain
+            try:
+                item_validators[key](val)
+                result[key] = val
+            except Exception:
+                # no_bandit_expl: try/except/pass over a very small piece of code is fine (though we _could_ rewrite
+                # the validators into true/false shape to avoid this too)
+                pass  # nosec B110
+
+    return result
diff --git a/ingest/parsers.py b/ingest/parsers.py
index 3da7b29..3cd419d 100644
--- a/ingest/parsers.py
+++ b/ingest/parsers.py
@@ -3,9 +3,8 @@ import io
 
 from bugsink.streams import MaxDataWriter
 
-
-class ParseError(Exception):
-    pass
+from .exceptions import ParseError
+from .header_validators import filter_valid_envelope_headers, filter_valid_item_headers
 
 
 class NewlineFinder:
@@ -150,6 +149,7 @@ class StreamingEnvelopeParser:
         if self.envelope_headers is None:
             # see test_eof_after_envelope_headers for why we don't error on EOF-after-header here
             self.envelope_headers = self._parse_headers(empty_is_error=True, eof_after_header_is_error=False)
+            self.envelope_headers = filter_valid_envelope_headers(self.envelope_headers)
 
         return self.envelope_headers
 
@@ -161,10 +161,13 @@ class StreamingEnvelopeParser:
 
         while not self.at_eof:
             item_headers = self._parse_headers(empty_is_error=False, eof_after_header_is_error=True)
+
             if item_headers is None:
                 self.at_eof = True
                 break
 
+            item_headers = filter_valid_item_headers(item_headers)
+
             if "length" in item_headers:
                 length = item_headers["length"]
                 finder = LengthFinder(length, error_for_eof="EOF while reading item with explicitly specified length")
diff --git a/ingest/tests.py b/ingest/tests.py
index 1ebbfe9..3e0d634 100644
--- a/ingest/tests.py
+++ b/ingest/tests.py
@@ -32,6 +32,9 @@ from bsmain.management.commands.send_json import Command as SendJsonCommand
 from .views import BaseIngestAPIView
 from .parsers import readuntil, NewlineFinder, ParseError, LengthFinder, StreamingEnvelopeParser
 from .event_counter import check_for_thresholds
+from .header_validators import (
+    validate_envelope_headers, validate_item_headers, filter_valid_item_headers, filter_valid_envelope_headers)
+
 from bugsink.exceptions import ViolatedExpectation
 
 
@@ -884,3 +887,88 @@ class TestParser(RegularTestCase):
 
         with self.assertRaises(StopIteration):
             header, item = next(items)
+
+    def test_garbage_sent_at(self):
+        # based on test_envelope_with_2_items_last_newline_omitted, but with a garbage sent_at value
+        parser = StreamingEnvelopeParser(io.BytesIO(b"""{"event_id":"9ec79c33ec9942ab8353589fcb2e04dc","dsn":"https://e12d836b15bb49d7bbf99e64295d995b:@sentry.io/42","sent_at":"garbage"}\n{"type":"attachment","length":10,"content_type":"text/plain","filename":"hello.txt"}\n\xef\xbb\xbfHello\r\n\n{"type":"event","length":41,"content_type":"application/json","filename":"application.log"}\n{"message":"hello world","level":"error"}\n"""))  # noqa
+
+        envelope_headers = parser.get_envelope_headers()
+
+        # note: sent_at filtered out
+        self.assertEqual(
+            {"event_id": "9ec79c33ec9942ab8353589fcb2e04dc",
+             "dsn": "https://e12d836b15bb49d7bbf99e64295d995b:@sentry.io/42"},
+            envelope_headers)
+
+        # the rest of the test is not repeated here
+
+
+class HeaderValidationTest(RegularTestCase):
+    # incomplete: regression-based-first (we'll add more later)
+
+    def test_sent_at_trailing_zeros(self):
+        # regression test for #179
+        validate_envelope_headers({"sent_at": "2025-07-31T23:05:37.0926585+00:00"})
+        validate_envelope_headers({"sent_at": "2025-07-31T23:05:37.0926585Z"})
+
+        with self.assertRaises(ParseError):
+            validate_envelope_headers({"sent_at": "garbage"})
+
+        with self.assertRaises(ParseError):
+            validate_envelope_headers({"sent_at": "2025-07-31T23:05:37.0926585032123+00:00"})
+
+        with self.assertRaises(ParseError):
+            validate_envelope_headers({"sent_at": "2025-07-31T23:05:37.0926+12:00"})
+
+    def test_dsn(self):
+        validate_envelope_headers({"dsn": "https://public@example.com/1"})
+        with self.assertRaises(ParseError):
+            validate_envelope_headers({"dsn": "not-a-dsn"})
+
+    def test_sdk(self):
+        validate_envelope_headers({"sdk": {}})
+        with self.assertRaises(ParseError):
+            validate_envelope_headers({"sdk": "1.0"})
+
+    def test_event_id(self):
+        valid32 = "a" * 32
+        valid36 = "123e4567-e89b-12d3-a456-426614174000"
+        validate_envelope_headers({"event_id": valid32})
+        validate_envelope_headers({"event_id": valid36})
+
+        with self.assertRaises(ParseError):
+            validate_envelope_headers({"event_id": "xyz"})
+
+        with self.assertRaises(ParseError):
+            validate_envelope_headers({"event_id": "g" * 32})
+
+    def test_filter_valid_envelope_headers(self):
+        headers = {
+            "dsn": "bad",
+            "sent_at": "2025-08-02T00:00:00Z",
+            "sdk": "bad",
+            "event_id": "deadbeefdeadbeefdeadbeefdeadbeef"
+        }
+
+        self.assertEqual(filter_valid_envelope_headers(headers), {
+            "sent_at": "2025-08-02T00:00:00Z",
+            "event_id": "deadbeefdeadbeefdeadbeefdeadbeef",
+        })
+
+    def test_validate_item_headers_non_event_doesnt_raise(self):
+        validate_item_headers({"type": "transaction", "length": -1})
+
+    def test_validate_item_headers(self):
+        validate_item_headers({"type": "event", "length": 0})
+
+        with self.assertRaises(ParseError):
+            validate_item_headers({"type": "event", "length": -1})
+
+    def test_filter_valid_item_headers_non_event(self):
+        header = {"type": "transaction", "length": -1}
+        self.assertIs(filter_valid_item_headers(header), header)
+
+    def test_filter_valid_item_headers_event(self):
+        self.assertEqual(filter_valid_item_headers(
+            {"type": "event", "length": 3, "foo": 1}),
+            {"type": "event", "length": 3})
diff --git a/ingest/views.py b/ingest/views.py
index 0601208..719e6e1 100644
--- a/ingest/views.py
+++ b/ingest/views.py
@@ -1,3 +1,4 @@
+import uuid
 import hashlib
 import os
 import logging
@@ -624,6 +625,13 @@ class IngestEnvelopeAPIView(BaseIngestAPIView):
                 # payload's event_id), so we can rely on it having been set.
                 if "event_id" not in envelope_headers:
                     raise ParseError("event_id not found in envelope headers")
+
+                try:
+                    # validate that the event_id is a valid UUID as per the spec (validate at the edge)
+                    uuid.UUID(envelope_headers["event_id"])
+                except ValueError:
+                    raise ParseError("event_id in envelope headers is not a valid UUID")
+
                 filename = get_filename_for_event_id(envelope_headers["event_id"])
                 os.makedirs(os.path.dirname(filename), exist_ok=True)
                 return MaxDataWriter("MAX_EVENT_SIZE", open(filename, 'wb'))
diff --git a/issues/models.py b/issues/models.py
index 7bf0003..534b912 100644
--- a/issues/models.py
+++ b/issues/models.py
@@ -8,7 +8,9 @@ from django.db.models.functions import Concat
 from django.template.defaultfilters import date as default_date_filter
 from django.conf import settings
 from django.utils.functional import cached_property
+from django.utils.translation import gettext_lazy as _
 
+from bugsink.utils import assert_
 from bugsink.volume_based_condition import VolumeBasedCondition
 from bugsink.transaction import delay_on_commit
 from alerts.tasks import send_unmute_alert
@@ -468,7 +470,7 @@ class IssueQuerysetStateManager(object):
             unmute_after=None,
         )
 
-        assert triggering_event is None, "this method can only be called from the UI, i.e. user-not-event-triggered"
+        assert_(triggering_event is None, "this method can only be called from the UI, i.e. user-not-event-triggered")
         # for the rest of this method there's no fancy queryset based stuff (we don't actually do updates on the DB)
         # we resist the temptation to add filter(is_muted=True) in the below because that would actually add a query
         # (for this remark to be true triggering_event must be None, which is asserted for in the above)
@@ -484,16 +486,16 @@ class IssueQuerysetStateManager(object):
 class TurningPointKind(models.IntegerChoices):
     # The language of the kinds reflects a historic view of the system, e.g. "first seen" as opposed to "new issue"; an
     # alternative take (which is more consistent with the language used elsewhere" is a more "active" language.
-    FIRST_SEEN = 1, "First seen"
-    RESOLVED = 2, "Resolved"
-    MUTED = 3, "Muted"
-    REGRESSED = 4, "Marked as regressed"
-    UNMUTED = 5, "Unmuted"
+    FIRST_SEEN = 1, _("First seen")
+    RESOLVED = 2, _("Resolved")
+    MUTED = 3, _("Muted")
+    REGRESSED = 4, _("Marked as regressed")
+    UNMUTED = 5, _("Unmuted")
 
-    NEXT_MATERIALIZED = 10, "Release info added"
+    NEXT_MATERIALIZED = 10, _("Release info added")
 
     # ASSGINED = 10, "Assigned to user"   # perhaps later
-    MANUAL_ANNOTATION = 100, "Manual annotation"
+    MANUAL_ANNOTATION = 100, _("Manual annotation")
 
 
 class TurningPoint(models.Model):
diff --git a/issues/templates/issues/_event_nav.html b/issues/templates/issues/_event_nav.html
index 5d7e65d..a36381f 100644
--- a/issues/templates/issues/_event_nav.html
+++ b/issues/templates/issues/_event_nav.html
@@ -1,7 +1,8 @@
 {% load add_to_qs %}
+{% load i18n %}
 
                 <form action="{% url this_view issue_pk=issue.pk nav="last" %}" method="get">{# nav="last": when doing a new search on an event-page, you want the most recent matching event to show up #}
-                <input type="text" name="q" value="{{ q }}" placeholder="search..." class="focus:border-cyan-500 dark:focus:border-cyan-400 focus:ring-cyan-200 dark:focus:ring-cyan-700 rounded-md mr-2"/>
+                <input type="text" name="q" value="{{ q }}" placeholder="{% translate 'search...' %}" class="focus:border-cyan-500 dark:focus:border-cyan-400 focus:ring-cyan-200 dark:focus:ring-cyan-700 rounded-md mr-2"/>
                 </form>
 
                 {% if has_prev %} {# no need for 'is_first': if you can go to the left, you can go all the way to the left too #}
diff --git a/issues/templates/issues/base.html b/issues/templates/issues/base.html
index 9beecc8..668f6ee 100644
--- a/issues/templates/issues/base.html
+++ b/issues/templates/issues/base.html
@@ -4,6 +4,8 @@
 {% load humanize %}
 {% load stricter_templates %}
 {% load add_to_qs %}
+{% load i18n %}
+
 {% block title %}{{ issue.title }} · {{ block.super }}{% endblock %}
 
 {% block content %}
@@ -18,12 +20,12 @@
 
             {% spaceless %}{# needed to avoid whitespace between the looks-like-one-buttons #}
             {% if issue.project.has_releases %}
-                <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md" name="action" value="resolved_next">Resolved in next release</button>
+                <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md" name="action" value="resolved_next">{% translate "Resolved in next release" %}</button>
 
                 <button disabled class="font-bold text-slate-300 dark:text-slate-600 fill-slate-300 dark:fill-slate-600 stroke-slate-300 dark:stroke-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-t-2 border-b-2 rounded-e-md"><svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
                 {# we just hide the whole dropdown; this is the easiest implementation of not-showing the dropdown #}
             {% else %}
-                <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-md" name="action" value="resolved">Resolve</button>
+                <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-md" name="action" value="resolved">{% translate "Resolve" %}</button>
             {% endif %}
             {% endspaceless %}
 
@@ -32,7 +34,7 @@
 
             {% if issue.project.has_releases %}
                 {# 'by next' is shown even if 'by current' is also shown: just because you haven't seen 'by current' doesn't mean it's actually already solved; and in fact we show this option first precisely because we can always show it #}
-                <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-s-md" name="action" value="resolved_next">Resolved in next release</button>
+                <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-s-md" name="action" value="resolved_next">{% translate "Resolved in next release" %}</button>
 
                 <div class="dropdown">
                     <button disabled {# disabled b/c clicking the dropdown does nothing - we have hover for that #} class="font-bold text-slate-800 dark:text-slate-100 fill-slate-800 dark:fill-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-r-2 border-t-2 border-b-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-e-md"><svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
@@ -51,7 +53,7 @@
 
 
             {% else %}
-                <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" name="action" value="resolve">Resolve</button>
+                <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" name="action" value="resolve">{% translate "Resolve" %}</button>
             {% endif %}
 
             {% endspaceless %}
@@ -59,14 +61,14 @@
 
         {% spaceless %}{# needed to avoid whitespace between the looks-like-one-buttons #}
         {% if not issue.is_muted and not issue.is_resolved %}
-            <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-s-md" name="action" value="mute">Mute</button>
+            <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-s-md" name="action" value="mute">{% translate "Mute" %}</button>
         {% else %}
-            <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md" name="action" value="mute">Mute</button>
+            <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md" name="action" value="mute">{% translate "Mute" %}</button>
         {% endif %}
 
         <div class="dropdown">
             {% if not issue.is_muted and not issue.is_resolved %}
-                <button disabled {# disabled b/c clicking the dropdown does nothing - we have hover for that #} class="font-bold text-slate-500 dark:text-slate-300 fill-slate-500 dark:fill-slate-500 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring">Mute for/until&nbsp;&nbsp;<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
+                <button disabled {# disabled b/c clicking the dropdown does nothing - we have hover for that #} class="font-bold text-slate-500 dark:text-slate-300 fill-slate-500 dark:fill-slate-500 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring">{% translate "Mute for/until&nbsp;&nbsp;" %}<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
 
                 <div class="dropdown-content-right flex-col">
                     {% for mute_option in mute_options %}
@@ -74,7 +76,7 @@
                     {% endfor %}
                 </div>
             {% else %}
-                <button disabled class="font-bold text-slate-300 dark:text-slate-600 fill-slate-300 dark:fill-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2">Mute for/until&nbsp;&nbsp;<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
+                <button disabled class="font-bold text-slate-300 dark:text-slate-600 fill-slate-300 dark:fill-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2">{% translate "Mute for/until&nbsp;&nbsp;" %}<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
                 {# note that when the issue is muted, no further muting is allowed. this is a design decision, I figured this is the easiest-to-understand UI, #}
                 {# both at the point-of-clicking and when displaying the when-will-this-be-unmuted in some place #}
                 {# (the alternative would be to allow multiple simulteneous reasons for unmuting to exist next to each other #}
@@ -83,9 +85,9 @@
         </div>
 
         {% if issue.is_muted and not issue.is_resolved %}
-            <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-e-md" name="action" value="unmute">Unmute</button>
+            <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-e-md" name="action" value="unmute">{% translate "Unmute" %}</button>
         {% else %}
-            <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 rounded-e-md" name="action" value="unmute">Unmute</button>
+            <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 rounded-e-md" name="action" value="unmute">{% translate "Unmute" %}</button>
         {% endif %}
 
         {% endspaceless %}
@@ -107,13 +109,13 @@
     {# overflow-x-auto is needed at the level of the flex item such that it works at the level where we need it (the code listings)#}
     <div class="ml-4 mb-4 mr-4 border-2 overflow-x-auto flex-[2_1_96rem]"><!-- the whole of the big tabbed view--> {# 96rem is 1536px, which matches the 2xl class; this is no "must" but eyeballing revealed: good result #}
         <div class="flex bg-slate-50 dark:bg-slate-800 border-b-2"><!-- container for the actual tab buttons -->
-            <a href="/issues/issue/{{ issue.id }}/event/{% if event %}{{ event.id }}{% else %}last{% endif %}/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "stacktrace" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">Stacktrace</div></a>
-            <a href="/issues/issue/{{ issue.id }}/event/{% if event %}{{ event.id }}{% else %}last{% endif %}/details/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "event-details" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">Event&nbsp;Details</div></a>
-            <a href="/issues/issue/{{ issue.id }}/event/{% if event %}{{ event.id }}{% else %}last{% endif %}/breadcrumbs/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "breadcrumbs" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">Breadcrumbs</div></a>
-            <a href="/issues/issue/{{ issue.id }}/events/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "event-list" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">Event&nbsp;List</div></a>
-            <a href="/issues/issue/{{ issue.id }}/tags/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "tags" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">Tags</div></a>
-            <a href="/issues/issue/{{ issue.id }}/grouping/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "grouping" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">Grouping</div></a>
-            <a href="/issues/issue/{{ issue.id }}/history/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "history" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">History</div></a>
+            <a href="/issues/issue/{{ issue.id }}/event/{% if event %}{{ event.id }}{% else %}last{% endif %}/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "stacktrace" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">{% translate "Stacktrace" %}</div></a>
+            <a href="/issues/issue/{{ issue.id }}/event/{% if event %}{{ event.id }}{% else %}last{% endif %}/details/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "event-details" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">{% translate "Event&nbsp;Details" %}</div></a>
+            <a href="/issues/issue/{{ issue.id }}/event/{% if event %}{{ event.id }}{% else %}last{% endif %}/breadcrumbs/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "breadcrumbs" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">{% translate "Breadcrumbs" %}</div></a>
+            <a href="/issues/issue/{{ issue.id }}/events/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "event-list" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">{% translate "Event&nbsp;List" %}</div></a>
+            <a href="/issues/issue/{{ issue.id }}/tags/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "tags" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">{% translate "Tags" %}</div></a>
+            <a href="/issues/issue/{{ issue.id }}/grouping/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "grouping" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">{% translate "Grouping" %}</div></a>
+            <a href="/issues/issue/{{ issue.id }}/history/{% current_qs %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if tab == "history" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 border-slate-400 hover:border-b-4{% endif %}">{% translate "History" %}</div></a>
         </div>
 
         <div class="m-4"><!-- div for tab_content -->
@@ -122,19 +124,19 @@
         </div>
 
         <div class="flex p-4 bg-slate-200 dark:bg-slate-800 border-b-2"><!-- bottom nav bar -->
-            {% if is_event_page %}<div>Event {{ event.digest_order|intcomma }} of {{ issue.digested_event_count|intcomma }} which occured at <span class="font-bold">{{ event.ingested_at|date:"j M G:i T" }}</span></div>{% endif %}
+            {% if is_event_page %}<div>{% blocktranslate with digest_order=event.digest_order|intcomma total_events=issue.digested_event_count|intcomma ingested_at=event.ingested_at|date:"j M G:i T" %}Event {{ digest_order }} of {{ total_events }} which occured at <span class="font-bold">{{ ingested_at }}</span>{% endblocktranslate %}</div>{% endif %}
             <div class="ml-auto pr-4 font-bold text-slate-500 dark:text-slate-300">
                 {% if is_event_page %}
-                <a href="/events/event/{{ event.id }}/download/">Download</a>
-                | <a href="/events/event/{{ event.id }}/raw/" >JSON</a>
-                | <a href="/events/event/{{ event.id }}/plain/" >Plain</a>
+                <a href="/events/event/{{ event.id }}/download/">{% translate "Download" %}</a>
+                | <a href="/events/event/{{ event.id }}/raw/" >{% translate "JSON" %}</a>
+                | <a href="/events/event/{{ event.id }}/plain/" >{% translate "Plain" %}</a>
                 {% endif %}
 
                 {% if app_settings.USE_ADMIN and user.is_staff %}
                     {% if is_event_page %}
-                        | <a href="/admin/events/event/{{ event.id }}/change/">Event Admin</a> |
+                        | <a href="/admin/events/event/{{ event.id }}/change/">{% translate "Event Admin" %}</a> |
                     {% endif %}
-                    <a href="/admin/issues/issue/{{ issue.id }}/change/">Issue Admin</a>
+                    <a href="/admin/issues/issue/{{ issue.id }}/change/">{% translate "Issue Admin" %}</a>
                 {% endif %}
 
             </div>
@@ -152,22 +154,22 @@
 
             <div class="p-4">
                 <div class="mb-4">
-                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">Issue #</div>
+                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">{% translate "Issue" %} #</div>
                     <div>{{ issue.friendly_id }} </div>
                 </div>
 
                 <div class="mb-4">
-                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">State</div>
+                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">{% translate "State" %}</div>
                     <div>
                         {% if issue.is_resolved %}
-                            Resolved
+                            {% translate "Resolved" %}
                             {% for version in issue.get_fixed_at %}
-                                {% if forloop.first %}in{% endif %}
+                                {% if forloop.first %}{% translate "in" %}{% endif %}
                                 <span {% if version|issha %}class="font-mono"{% endif %}>{{ version|shortsha }}{% if not forloop.last %}</span>,{% endif %}
                             {% endfor %}
                         {% else %}
                             {% if issue.is_muted %}
-                                Muted
+                                {% translate "Muted" %}
                                 {% if issue.unmute_after %}
                                     until {{ issue.unmute_after|date:"j M G:i T" }}.
                                 {% elif issue.get_unmute_on_volume_based_conditions %}
@@ -178,14 +180,14 @@
                                     (unconditionally).
                                 {% endif %}
                             {% else %}
-                                Open
+                                {% translate "Open" %}
                             {% endif %}
                         {% endif %}
                     </div>
                 </div>
 
                 <div class="mb-4">
-                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">Nr. of events:</div>
+                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">{% translate "Nr. of events" %}:</div>
                     <div>{{ issue.digested_event_count|intcomma }}
                     {% if issue.digested_event_count != issue.stored_event_count %}
                         total seen</div><div>{{ issue.stored_event_count|intcomma }} available</div>
@@ -196,17 +198,17 @@
 
                 {% if issue.digested_event_count > 1 %}
                 <div class="mb-4">
-                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">First seen:</div>
+                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">{% translate "First seen" %}:</div>
                     <div>{{ issue.first_seen|date:"j M G:i T" }}</div>
                 </div>
 
                 <div class="mb-4">
-                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">Last seen:</div>
+                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">{% translate "Last seen" %}:</div>
                     <div>{{ issue.last_seen|date:"j M G:i T" }}</div>
                 </div>
                 {% else %}
                 <div class="mb-4">
-                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">Seen at:</div>
+                    <div class="text-sm font-bold text-slate-500 dark:text-slate-300">{% translate "Seen at" %}:</div>
                     <div>{{ issue.first_seen|date:"j M G:i T" }}</div>
                 </div>
                 {% endif %}
@@ -229,7 +231,7 @@
         <div class="border-2 mb-4 mr-4"><!-- "issue: tags" box -->
             <div class="font-bold border-b-2">
                 <div class="p-4 border-slate-50 dark:border-slate-900 text-slate-500 dark:text-slate-300">
-                Issue Tags
+                {% translate "Issue Tags" %}
                 </div>
             </div>
             <div class="p-4">
diff --git a/issues/templates/issues/breadcrumbs.html b/issues/templates/issues/breadcrumbs.html
index 48f6143..a4868dc 100644
--- a/issues/templates/issues/breadcrumbs.html
+++ b/issues/templates/issues/breadcrumbs.html
@@ -3,6 +3,7 @@
 {% load stricter_templates %}
 {% load issues %}
 {% load humanize %}
+{% load i18n %}
 
 {% block tab_content %}
 
@@ -21,7 +22,7 @@
 {% if not breadcrumbs %}
 
     <div class="mt-6 mb-6 italic">
-        No breadcrumbs available for this event.
+        {% translate "No breadcrumbs available for this event." %}
     </div>
 
 {% else %}
@@ -49,8 +50,7 @@
         {{ breadcrumb.message }}
     </td>
     <td class="p-4 font-bold text-slate-500 dark:text-slate-300 align-top">
-        {{ breadcrumb.timestamp }}
-        {# {{ breadcrumb.timestamp|date:"G:i T" and milis  }} #}
+        {{ breadcrumb.timestamp|timestamp_with_millis }}
     </td>
 
     </tr>
diff --git a/issues/templates/issues/history.html b/issues/templates/issues/history.html
index 2c78725..fa99756 100644
--- a/issues/templates/issues/history.html
+++ b/issues/templates/issues/history.html
@@ -1,11 +1,12 @@
 {% extends "issues/base.html" %}
 {% load static %}
 {% load user %}
+{% load i18n %}
 
 {% block tab_content %}
 
-<h1 class="text-2xl font-bold text-ellipsis whitespace-nowrap overflow-hidden">History</h1>
-<div class="italic">Most recent first</div>
+<h1 class="text-2xl font-bold text-ellipsis whitespace-nowrap overflow-hidden">{% translate "History" %}</h1>
+<div class="italic">{% translate "Most recent first" %}</div>
 
 
     <div class="flex"><!-- single turningpoint (for 'your comments')-->
@@ -17,12 +18,12 @@
         <div class="border-slate-300 dark:border-slate-600 border-2 rounded-md mt-6 flex-auto"><!-- the "your comments balloon" -->
             <div class="pl-4 flex triangle-left"><!-- 'header' row -->
                 <div class="mt-4 mb-4">
-                    <span class="font-bold text-slate-800 dark:text-slate-100 italic">Add comment as manual annotation</span>
+                    <span class="font-bold text-slate-800 dark:text-slate-100 italic">{% translate "Add comment as manual annotation" %}</span>
                 </div>
 
                 <div class="ml-auto flex"> <!-- 'header' row right side -->
                     <div class="p-4">
-                        Now
+                        {% translate "Now" %}
                     </div>
                 </div>
             </div>
@@ -31,8 +32,8 @@
                     <div class="mt-4">
                     <form action="{% url "history_comment_new" issue_pk=issue.id %}" method="post">
                     {% csrf_token %}
-                    <textarea name="comment" placeholder="comments..." class="bg-slate-50 dark:bg-slate-800 focus:border-cyan-500 dark:focus:border-cyan-400 focus:ring-cyan-200 dark:focus:ring-cyan-700 rounded-md w-full h-32" onkeypress="submitOnCtrlEnter(event)"></textarea>
-                    <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 mt-2 border-2 rounded-md hover:bg-slate-200 dark:hover:bg-slate-800 active:ring">Post comment</button>
+                    <textarea name="comment" placeholder="{% translate 'comments...' %}" class="bg-slate-50 dark:bg-slate-800 focus:border-cyan-500 dark:focus:border-cyan-400 focus:ring-cyan-200 dark:focus:ring-cyan-700 rounded-md w-full h-32" onkeypress="submitOnCtrlEnter(event)"></textarea>
+                    <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 mt-2 border-2 rounded-md hover:bg-slate-200 dark:hover:bg-slate-800 active:ring">{% translate "Post comment" %}</button>
                     </form>
                     </div>
                 </div>{# 'body' part of the balloon #}
@@ -55,7 +56,7 @@
         <div class="border-slate-300 dark:border-slate-600 border-2 rounded-md mt-6 flex-auto js-balloon"><!-- the "balloon" -->
             <div class="pl-4 flex triangle-left"><!-- 'header' row -->
                 <div class="mt-4 mb-4">
-                    <span class="font-bold text-slate-800 dark:text-slate-100">{{ turningpoint.get_kind_display }}</span> by
+                    <span class="font-bold text-slate-800 dark:text-slate-100">{{ turningpoint.get_kind_display }}</span> {% translate "by" context "History" %}
                     <span class="font-bold text-slate-800 dark:text-slate-100">{% if turningpoint.user_id %}{{ turningpoint.user|best_displayname }}{% else %}Bugsink{% endif %}</span>
 
                     {% if turningpoint.user_id == request.user.id %}
diff --git a/issues/templates/issues/issue_list.html b/issues/templates/issues/issue_list.html
index b603ac8..415cfb8 100644
--- a/issues/templates/issues/issue_list.html
+++ b/issues/templates/issues/issue_list.html
@@ -2,8 +2,9 @@
 {% load static add_to_qs %}
 {% load humanize %}
 {% load add_to_qs %}
+{% load i18n %}
 
-{% block title %}Issues · {{ project.name }} · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Issues" %} · {{ project.name }} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -11,15 +12,15 @@
 <div id="deleteModal" class="hidden fixed inset-0 bg-slate-600 dark:bg-slate-900 bg-opacity-50 dark:bg-opacity-50 overflow-y-auto h-full w-full z-50 flex items-center justify-center">
     <div class="relative p-6 border border-slate-300 dark:border-slate-600 w-96 shadow-lg rounded-md bg-white dark:bg-slate-900">
         <div class="text-center m-4">
-            <h3 class="text-2xl font-semibold text-slate-800 dark:text-slate-100 mt-3 mb-4">Delete Issues</h3>
+            <h3 class="text-2xl font-semibold text-slate-800 dark:text-slate-100 mt-3 mb-4">{% translate "Delete Issues" %}</h3>
             <div class="mt-4 mb-6">
                 <p class="text-slate-700 dark:text-slate-300">
-                    Deleting an Issue is a permanent action and cannot be undone. It's typically better to resolve or mute an issue instead of deleting it, as this allows you to keep track of past issues and their resolutions.
+                    {% translate "Deleting an Issue is a permanent action and cannot be undone. It's typically better to resolve or mute an issue instead of deleting it, as this allows you to keep track of past issues and their resolutions." %}
                 </p>
             </div>
             <div class="flex items-center justify-center space-x-4 mb-4">
-                <button id="cancelDelete" class="text-cyan-500 dark:text-cyan-300 font-bold">Cancel</button>
-                <button id="confirmDelete" type="submit" class="font-bold py-2 px-4 rounded bg-red-500 dark:bg-red-700 text-white border-2 border-red-600 dark:border-red-400 hover:bg-red-600 dark:hover:bg-red-800 active:ring">Delete</button>
+                <button id="cancelDelete" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Cancel" %}</button>
+                <button id="confirmDelete" type="submit" class="font-bold py-2 px-4 rounded bg-red-500 dark:bg-red-700 text-white border-2 border-red-600 dark:border-red-400 hover:bg-red-600 dark:hover:bg-red-800 active:ring">{% translate "Delete" %}</button>
             </div>
         </div>
     </div>
@@ -27,25 +28,25 @@
 
 
 <div class="m-4">
-<h1 class="text-4xl mt-4 font-bold">{{ project.name }} - Issues</h1>
+<h1 class="text-4xl mt-4 font-bold">{{ project.name }} - {% translate "Issues" %}</h1>
 
 {% if unapplied_issue_ids %}
 <div class="bg-red-100 w-full mt-2 mb-2 p-4 border-red-800 border-2">
-    The chosen action is not applicable to all selected issues. Issues for which it has not been applied have been left with checkboxes checked so that you can try again with another action.
+    {% translate "The chosen action is not applicable to all selected issues. Issues for which it has not been applied have been left with checkboxes checked so that you can try again with another action." %}
 </div>
 {% endif %}
 
 <div class="flex bg-slate-50 dark:bg-slate-800 border-b-2 mt-4 items-end">
     <div class="flex">
-    <a href="{% url "issue_list_open" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "open" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">Open</div></a>
-    <a href="{% url "issue_list_unresolved" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "unresolved" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">Unresolved</div></a>
-    <a href="{% url "issue_list_muted" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "muted" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 dark:text-slate-300 hover:border-slate-400 hover:border-b-4{% endif %}">Muted</div></a>
-    <a href="{% url "issue_list_resolved" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "resolved" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-slate-400 hover:border-b-4{% endif %}">Resolved</div></a>
-    <a href="{% url "issue_list_all" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "all" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 dark:text-slate-300 hover:border-slate-400 hover:border-b-4{% endif %}">All</div></a>
+    <a href="{% url "issue_list_open" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "open" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">{% translate "Open" %}</div></a>
+    <a href="{% url "issue_list_unresolved" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "unresolved" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">{% translate "Unresolved" %}</div></a>
+    <a href="{% url "issue_list_muted" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "muted" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 dark:text-slate-300 hover:border-slate-400 hover:border-b-4{% endif %}">{% translate "Muted" %}</div></a>
+    <a href="{% url "issue_list_resolved" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "resolved" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-slate-400 hover:border-b-4{% endif %}">{% translate "Resolved" %}</div></a>
+    <a href="{% url "issue_list_all" project_pk=project.id %}"><div class="p-4 font-bold hover:bg-slate-200 dark:hover:bg-slate-800 {% if state_filter == "all" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4{% else %}text-slate-500 dark:text-slate-300 hover:border-slate-400 hover:border-b-4{% endif %}">{% translate "All" %}</div></a>
     </div>
     <div class="ml-auto p-2">
         <form action="." method="get">
-        <input type="text" name="q" value="{{ q }}" placeholder="search issues..." class="bg-slate-50 dark:bg-slate-800 focus:border-cyan-500 dark:focus:border-cyan-400 focus:ring-cyan-200 dark:focus:ring-cyan-700 rounded-md"/>
+        <input type="text" name="q" value="{{ q }}" placeholder="{% translate 'Search issues...' %}" class="bg-slate-50 dark:bg-slate-800 focus:border-cyan-500 dark:focus:border-cyan-400 focus:ring-cyan-200 dark:focus:ring-cyan-700 rounded-md"/>
         </form>
     </div>
 </div>
@@ -75,12 +76,12 @@
 
                     {% spaceless %}{# needed to avoid whitespace between the looks-like-one-buttons #}
                     {% if project.has_releases %}
-                        <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md" name="action" value="resolved_next">Resolved in next release</button>
+                        <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md" name="action" value="resolved_next">{% translate "Resolved in next release" %}</button>
 
                         <button disabled class="font-bold text-slate-300 dark:text-slate-600 fill-slate-300 dark:fill-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-t-2 border-b-2 rounded-e-md"><svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
                         {# we just hide the whole dropdown; this is the easiest implementation of not-showing the dropdown #}
                     {% else %}
-                        <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-md" name="action" value="resolved">Resolve</button>
+                        <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-md" name="action" value="resolved">{% translate "Resolve" %}</button>
                     {% endif %}
                     {% endspaceless %}
 
@@ -105,7 +106,7 @@
 
 
                     {% else %}
-                        <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" name="action" value="resolve">Resolve</button>
+                        <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" name="action" value="resolve">{% translate "Resolve" %}</button>
                     {% endif %}
 
                     {% endspaceless %}
@@ -113,14 +114,14 @@
 
                 {% spaceless %}{# needed to avoid whitespace between the looks-like-one-buttons #}
                 {% if not disable_mute_buttons %}
-                <button name="action" value="mute" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-s-md">Mute</button>
+                <button name="action" value="mute" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-s-md">{% translate "Mute" %}</button>
                 {% else %}
-                <button disabled name="action" value="mute" class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md">Mute</button>
+                <button disabled name="action" value="mute" class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 rounded-s-md">{% translate "Mute" %}</button>
                 {% endif %}
 
                 <div class="dropdown">
                     {% if not disable_mute_buttons %}
-                        <button disabled {# disabled b/c clicking the dropdown does nothing - we have hover for that #} class="font-bold text-slate-500 dark:text-slate-300 fill-slate-500 dark:fill-slate-500 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring">Mute for/until&nbsp;&nbsp;<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
+                        <button disabled {# disabled b/c clicking the dropdown does nothing - we have hover for that #} class="font-bold text-slate-500 dark:text-slate-300 fill-slate-500 dark:fill-slate-500 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring">{% translate "Mute for/until&nbsp;&nbsp;" %}<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
 
                         <div class="dropdown-content-right flex-col">
                             {% for mute_option in mute_options %}
@@ -128,31 +129,31 @@
                             {% endfor %}
                         </div>
                     {% else %}
-                        <button disabled class="font-bold text-slate-300 dark:text-slate-600 fill-slate-300 dark:fill-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2">Mute for/until&nbsp;&nbsp;<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
+                        <button disabled class="font-bold text-slate-300 dark:text-slate-600 fill-slate-300 dark:fill-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2">{% translate "Mute for/until&nbsp;&nbsp;" %}<svg xmlns="http://www.w3.org/2000/svg" fill="full" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="w-5 h-5 inline"><path d="M6.5,8.5l6,7l6-7H6.5z"/></svg></button>
                         {# we just hide the whole dropdown; this is the easiest implementation of not-showing the dropdown when the issue is already muted #}
                     {% endif %}
                 </div>
 
                 {% if not disable_unmute_buttons %}
-                    <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-e-md" name="action" value="unmute">Unmute</button>
+                    <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-e-md" name="action" value="unmute">{% translate "Unmute" %}</button>
                 {% else %}
-                    <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 rounded-e-md" name="action" value="unmute">Unmute</button>
+                    <button disabled class="font-bold text-slate-300 dark:text-slate-600 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 border-r-2 border-b-2 border-t-2 rounded-e-md" name="action" value="unmute">{% translate "Unmute" %}</button>
                 {% endif %}
 
                 <div class="dropdown">
                     <button disabled {# disabled b/c clicking the dropdown does nothing - we have hover for that #} class="font-bold text-slate-500 fill-slate-500 border-slate-300 ml-2 pl-4 pr-4 pb-2 pt-2 border-2 hover:bg-slate-200 active:ring rounded-md">...</button>
 
                     <div class="dropdown-content-right flex-col">
-                        <button type="button" onclick="showDeleteConfirmation()" class="block self-stretch font-bold text-red-500 dark:text-slate-300 border-slate-300 pl-4 pr-4 pb-2 pt-2 border-l-2 border-r-2 border-b-2 bg-white dark:bg-slate-900 hover:bg-red-50 dark:hover:bg-red-800 active:ring text-left whitespace-nowrap">Delete</button>
+                        <button type="button" onclick="showDeleteConfirmation()" class="block self-stretch font-bold text-red-500 dark:text-slate-300 border-slate-300 pl-4 pr-4 pb-2 pt-2 border-l-2 border-r-2 border-b-2 bg-white dark:bg-slate-900 hover:bg-red-50 dark:hover:bg-red-800 active:ring text-left whitespace-nowrap">{% translate "Delete" %}</button>
                     </div>
-                </div> 
+                </div>
 
                 {% endspaceless %}
 
 
 
                 {# NOTE: "reopen" is not available in the UI as per the notes in issue_detail #}
-                {# only for resolved/muted items <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Reopen</button> #}
+                {# only for resolved/muted items <button class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">{% translate "Reopen" %}</button> #}
 
             </div>
             </td>
@@ -174,7 +175,7 @@
   <path stroke-linecap="round" stroke-linejoin="round" d="M17.25 9.75 19.5 12m0 0 2.25 2.25M19.5 12l2.25-2.25M19.5 12l-2.25 2.25m-10.5-6 4.72-4.72a.75.75 0 0 1 1.28.53v15.88a.75.75 0 0 1-1.28.53l-4.72-4.72H4.51c-.88 0-1.704-.507-1.938-1.354A9.009 9.009 0 0 1 2.25 12c0-.83.112-1.633.322-2.396C2.806 8.756 3.63 8.25 4.51 8.25H6.75Z" />
 </svg>&nbsp;&nbsp;{% endif %}{{ issue.title|truncatechars:100 }}</a>
                 </div>
-                <div class="text-sm">from <b>{{ issue.first_seen|date:"j M G:i T" }}</b> | last <b>{{ issue.last_seen|date:"j M G:i T" }}</b> | with <b>{{ issue.digested_event_count|intcomma }}</b> events
+                <div class="text-sm">from <b>{{ issue.first_seen|date:"j M G:i T" }}</b> | last <b>{{ issue.last_seen|date:"j M G:i T" }}</b> | {% blocktranslate with event_count=issue.digested_event_count|intcomma %}with <b>{{ event_count }}</b> events{% endblocktranslate %}
                 {% if issue.digested_event_count != issue.stored_event_count %}
                     <span class="text-xs">({{ issue.stored_event_count|intcomma }}&thinsp;av{#ilable#})<span>
                 {% endif %}
@@ -195,12 +196,12 @@
                     No {{ state_filter }} issues found for "{{ q }}"
                 {% else %}
                     {% if state_filter == "open" %}
-                        Congratulations! You have no open issues.
+                        {% translate "Congratulations! You have no open issues." %}
                         {% if project.digested_event_count == 0 %}
                             This might mean you have not yet <a class="text-cyan-500 dark:text-cyan-300 font-bold" href="{% url "project_sdk_setup" project_pk=project.id %}">set up your SDK</a>.
                         {% endif %}
                     {% else %}
-                        No {{ state_filter }} issues found.
+                    {% blocktranslate %}No {{ state_filter }} issues found.{% endblocktranslate %}
                     {% endif %}
                 {% endif %}
                 </div>
@@ -230,12 +231,12 @@
                 {% endif %}
 
                 {% if page_obj.object_list|length > 0 %}{# sounds expensive, but this list is cached #}
-                Issues {{ page_obj.start_index|intcomma }} – {{ page_obj.end_index|intcomma }}
+                {% translate "Issues" %} {{ page_obj.start_index|intcomma }} – {{ page_obj.end_index|intcomma }}
                 {% else %}
                     {% if page_obj.number > 1 %}
                     Less than {{ page_obj.start_index }} Issues  {# corresponds to the 1/250 case of having an exactly full page and navigating to an empty page after that #}
                     {% else %}
-                    0 Issues
+                    0 {% translate "Issues" %}
                     {% endif %}
                 {% endif %}
 
diff --git a/issues/templates/issues/stacktrace.html b/issues/templates/issues/stacktrace.html
index 6036c72..248b4a8 100644
--- a/issues/templates/issues/stacktrace.html
+++ b/issues/templates/issues/stacktrace.html
@@ -3,6 +3,7 @@
 {% load stricter_templates %}
 {% load issues %}
 {% load humanize %}
+{% load i18n %}
 
 {% block tab_content %}
 
@@ -21,7 +22,7 @@
     </div>
 
     <div class="mt-6 mb-6 italic">
-        No stacktrace available for this event.
+        {% translate "No stacktrace available for this event." %}
     </div>
 {% endif %}
 
diff --git a/issues/templates/issues/tags.html b/issues/templates/issues/tags.html
index 1e9a588..1868484 100644
--- a/issues/templates/issues/tags.html
+++ b/issues/templates/issues/tags.html
@@ -1,5 +1,6 @@
 {% extends "issues/base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block tab_content %}
 
@@ -20,7 +21,7 @@
         <h1 class="text-2xl font-bold mt-4">No tags</h1>
 
         <div class="mb-6">
-            No tags found for this issue.
+            {% trans "No tags found for this issue." %}
         </div>
 
     {% endfor %}
diff --git a/issues/views.py b/issues/views.py
index 990793a..8e591a7 100644
--- a/issues/views.py
+++ b/issues/views.py
@@ -7,8 +7,6 @@ from django.db.models import Q
 from django.utils import timezone
 from django.shortcuts import render, get_object_or_404, redirect
 from django.http import HttpResponseRedirect, HttpResponseNotAllowed
-from django.utils.safestring import mark_safe
-from django.template.defaultfilters import date
 from django.urls import reverse
 from django.core.exceptions import PermissionDenied
 from django.http import Http404
@@ -24,6 +22,7 @@ from bugsink.decorators import project_membership_required, issue_membership_req
 from bugsink.transaction import durable_atomic
 from bugsink.period_utils import add_periods_to_datetime
 from bugsink.timed_sqlite_backend.base import different_runtime_limit
+from bugsink.utils import assert_
 
 from events.models import Event
 from events.ua_stuff import get_contexts_enriched_with_ua
@@ -31,6 +30,7 @@ from events.ua_stuff import get_contexts_enriched_with_ua
 from compat.timestamp import format_timestamp
 from projects.models import ProjectMembership
 from tags.search import search_issues, search_events, search_events_optimized
+from theme.templatetags.issues import timestamp_with_millis
 
 from .models import Issue, IssueQuerysetStateManager, IssueStateManager, TurningPoint, TurningPointKind
 from .forms import CommentForm
@@ -555,12 +555,6 @@ def issue_event_breadcrumbs(request, issue, event_pk=None, digest_order=None, na
     })
 
 
-def _date_with_milis_html(timestamp):
-    return mark_safe(
-        date(timestamp, "j M G:i:s") + "." +
-        '<span class="text-xs">' + date(timestamp, "u")[:3] + '</span>')
-
-
 def _first_last(qs_with_digest_order):
     # this was once implemented with Min/Max, but just doing 2 queries is (on sqlite at least) much faster.
     first = qs_with_digest_order.order_by("digest_order").values_list("digest_order", flat=True).first()
@@ -604,9 +598,9 @@ def issue_event_details(request, issue, event_pk=None, digest_order=None, nav=No
         ("mechanism", get_path(get_main_exception(parsed_data), "mechanism", "type")),
 
         ("issue_id", issue.id),
-        ("timestamp", _date_with_milis_html(event.timestamp)),
-        ("ingested at", _date_with_milis_html(event.ingested_at)),
-        ("digested at", _date_with_milis_html(event.digested_at)),
+        ("timestamp", timestamp_with_millis(event.timestamp)),
+        ("ingested at", timestamp_with_millis(event.ingested_at)),
+        ("digested at", timestamp_with_millis(event.digested_at)),
         ("digest order", event.digest_order),
         ("remote_addr", event.remote_addr),
     ]
@@ -787,7 +781,7 @@ def history_comment_new(request, issue):
 
     if request.method == "POST":
         form = CommentForm(request.POST)
-        assert form.is_valid()  # we have only a textfield with no validation properties; also: no html-side handling
+        assert_(form.is_valid())  # we have only a textfield with no validation properties; also: no html-side handling
 
         if form.cleaned_data["comment"] != "":
             # one special case: we simply ignore newly created comments without any contents as a (presumed) mistake. I
@@ -814,7 +808,7 @@ def history_comment_edit(request, issue, comment_pk):
 
     if request.method == "POST":
         form = CommentForm(request.POST, instance=comment)
-        assert form.is_valid()
+        assert_(form.is_valid())
         form.save()
         return redirect(reverse(issue_history, kwargs={'issue_pk': issue.pk}) + f"#comment-{ comment_pk }")
 
diff --git a/locale/zh_Hans/LC_MESSAGES/django.mo b/locale/zh_Hans/LC_MESSAGES/django.mo
new file mode 100644
index 0000000..386cfcf
Binary files /dev/null and b/locale/zh_Hans/LC_MESSAGES/django.mo differ
diff --git a/locale/zh_Hans/LC_MESSAGES/django.po b/locale/zh_Hans/LC_MESSAGES/django.po
new file mode 100644
index 0000000..27b70ec
--- /dev/null
+++ b/locale/zh_Hans/LC_MESSAGES/django.po
@@ -0,0 +1,891 @@
+# SOME DESCRIPTIVE TITLE.
+# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
+# This file is distributed under the same license as the PACKAGE package.
+# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
+#
+#, fuzzy
+msgid ""
+msgstr ""
+"Project-Id-Version: PACKAGE VERSION\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2025-08-28 14:10+0200\n"
+"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
+"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
+"Language-Team: LANGUAGE <LL@li.org>\n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: bsmain/templates/bsmain/auth_token_list.html:5
+#: bsmain/templates/bsmain/auth_token_list.html:23
+#: bsmain/templates/bsmain/auth_token_list.html:41
+msgid "Auth Tokens"
+msgstr "授权令牌"
+
+#: bsmain/templates/bsmain/auth_token_list.html:28
+msgid "Add Token"
+msgstr "添加令牌"
+
+#: bsmain/templates/bsmain/auth_token_list.html:54
+#: issues/templates/issues/issue_list.html:23
+#: issues/templates/issues/issue_list.html:147
+msgid "Delete"
+msgstr "删除"
+
+#: bsmain/templates/bsmain/auth_token_list.html:63
+msgid "No Auth Tokens."
+msgstr "没有可用令牌。"
+
+#: bsmain/views.py:23
+msgid "Token deleted"
+msgstr "令牌已删除"
+
+#: issues/models.py:489 issues/templates/issues/base.html:201
+msgid "First seen"
+msgstr "首次出现"
+
+#: issues/models.py:490 issues/templates/issues/base.html:165
+#: issues/templates/issues/issue_list.html:44
+msgid "Resolved"
+msgstr "已解决"
+
+#: issues/models.py:491 issues/templates/issues/base.html:172
+#: issues/templates/issues/issue_list.html:43
+msgid "Muted"
+msgstr "已静默"
+
+#: issues/models.py:492
+msgid "Marked as regressed"
+msgstr "标记为"
+
+#: issues/models.py:493
+msgid "Unmuted"
+msgstr "已取消静默"
+
+#: issues/models.py:495
+msgid "Release info added"
+msgstr ""
+
+#: issues/models.py:498
+msgid "Manual annotation"
+msgstr "手动注释"
+
+#: issues/templates/issues/_event_nav.html:5
+msgid "search..."
+msgstr "搜索..."
+
+#: issues/templates/issues/base.html:23 issues/templates/issues/base.html:37
+#: issues/templates/issues/issue_list.html:79
+msgid "Resolved in next release"
+msgstr ""
+
+#: issues/templates/issues/base.html:28 issues/templates/issues/base.html:56
+#: issues/templates/issues/issue_list.html:84
+#: issues/templates/issues/issue_list.html:109
+msgid "Resolve"
+msgstr "解决"
+
+#: issues/templates/issues/base.html:64 issues/templates/issues/base.html:66
+#: issues/templates/issues/issue_list.html:117
+#: issues/templates/issues/issue_list.html:119
+msgid "Mute"
+msgstr "静默"
+
+#: issues/templates/issues/base.html:71 issues/templates/issues/base.html:79
+#: issues/templates/issues/issue_list.html:124
+#: issues/templates/issues/issue_list.html:132
+msgid "Mute for/until&nbsp;&nbsp;"
+msgstr "静默至/&nbsp;&nbsp;"
+
+#: issues/templates/issues/base.html:88 issues/templates/issues/base.html:90
+#: issues/templates/issues/issue_list.html:138
+#: issues/templates/issues/issue_list.html:140
+msgid "Unmute"
+msgstr "取消静默"
+
+#: issues/templates/issues/base.html:112
+msgid "Stacktrace"
+msgstr "栈追踪"
+
+#: issues/templates/issues/base.html:113
+msgid "Event&nbsp;Details"
+msgstr "事件详情"
+
+#: issues/templates/issues/base.html:114
+msgid "Breadcrumbs"
+msgstr "面包屑"
+
+#: issues/templates/issues/base.html:115
+msgid "Event&nbsp;List"
+msgstr "事件列表"
+
+#: issues/templates/issues/base.html:116
+msgid "Tags"
+msgstr "标签"
+
+#: issues/templates/issues/base.html:117
+msgid "Grouping"
+msgstr "分组"
+
+#: issues/templates/issues/base.html:118 issues/templates/issues/history.html:8
+#: templates/admin/change_form_object_tools.html:5
+msgid "History"
+msgstr "历史"
+
+#: issues/templates/issues/base.html:127
+#, python-format
+msgid ""
+"Event %(digest_order)s of %(total_events)s which occured at <span "
+"class=\"font-bold\">%(ingested_at)s</span>"
+msgstr ""
+"事件 %(digest_order)s 共 %(total_events)s 个 发生于 <span class=\"font-"
+"bold\">%(ingested_at)s</span>"
+
+#: issues/templates/issues/base.html:130
+#: templates/admin/change_form_object_tools.html:8
+msgid "Download"
+msgstr "下载"
+
+#: issues/templates/issues/base.html:131
+msgid "JSON"
+msgstr "JSON"
+
+#: issues/templates/issues/base.html:132
+msgid "Plain"
+msgstr "原始文本"
+
+#: issues/templates/issues/base.html:137
+msgid "Event Admin"
+msgstr "事件管理"
+
+#: issues/templates/issues/base.html:139
+msgid "Issue Admin"
+msgstr "问题管理"
+
+#: issues/templates/issues/base.html:157
+msgid "Issue"
+msgstr "问题"
+
+#: issues/templates/issues/base.html:162
+msgid "State"
+msgstr "状态"
+
+#: issues/templates/issues/base.html:167
+msgid "in"
+msgstr "于"
+
+#: issues/templates/issues/base.html:183
+#: issues/templates/issues/issue_list.html:41
+msgid "Open"
+msgstr "打开"
+
+#: issues/templates/issues/base.html:190
+msgid "Nr. of events"
+msgstr "事件数量"
+
+#: issues/templates/issues/base.html:206
+msgid "Last seen"
+msgstr "最后出现"
+
+#: issues/templates/issues/base.html:211
+msgid "Seen at"
+msgstr "出现时间"
+
+#: issues/templates/issues/base.html:234
+msgid "Issue Tags"
+msgstr "问题标签"
+
+#: issues/templates/issues/breadcrumbs.html:25
+msgid "No breadcrumbs available for this event."
+msgstr "这个事件没有可用的面包屑。"
+
+#: issues/templates/issues/history.html:9
+msgid "Most recent first"
+msgstr "新内容优先"
+
+#: issues/templates/issues/history.html:21
+msgid "Add comment as manual annotation"
+msgstr "添加评论作为手动注释"
+
+#: issues/templates/issues/history.html:26
+msgid "Now"
+msgstr "现在"
+
+#: issues/templates/issues/history.html:35
+msgid "comments..."
+msgstr "评论..."
+
+#: issues/templates/issues/history.html:36
+msgid "Post comment"
+msgstr "发表评论"
+
+#: issues/templates/issues/history.html:59
+msgctxt "History"
+msgid "by"
+msgstr "发表自"
+
+#: issues/templates/issues/issue_list.html:7
+#: issues/templates/issues/issue_list.html:31
+#: issues/templates/issues/issue_list.html:234
+#: issues/templates/issues/issue_list.html:239 theme/templates/base.html:40
+msgid "Issues"
+msgstr "问题"
+
+#: issues/templates/issues/issue_list.html:15
+msgid "Delete Issues"
+msgstr "删除问题"
+
+#: issues/templates/issues/issue_list.html:18
+msgid ""
+"Deleting an Issue is a permanent action and cannot be undone. It's typically "
+"better to resolve or mute an issue instead of deleting it, as this allows "
+"you to keep track of past issues and their resolutions."
+msgstr ""
+"删除问题是一个无法被撤销的永久行为。通常更建议标记为解决或者静默，而不是直接"
+"删除问题，以便于追踪您过去的问题和决议。"
+
+#: issues/templates/issues/issue_list.html:22
+#: projects/templates/projects/project_edit.html:21
+#: projects/templates/projects/project_edit.html:52
+#: projects/templates/projects/project_member_settings.html:43
+#: projects/templates/projects/project_member_settings.html:45
+#: projects/templates/projects/project_members_invite.html:52
+#: projects/templates/projects/project_new.html:27
+#: teams/templates/teams/team_edit.html:30
+#: teams/templates/teams/team_member_settings.html:43
+#: teams/templates/teams/team_member_settings.html:45
+#: teams/templates/teams/team_members_invite.html:54
+#: teams/templates/teams/team_new.html:25
+#: users/templates/users/user_edit.html:28
+msgid "Cancel"
+msgstr "取消"
+
+#: issues/templates/issues/issue_list.html:35
+msgid ""
+"The chosen action is not applicable to all selected issues. Issues for which "
+"it has not been applied have been left with checkboxes checked so that you "
+"can try again with another action."
+msgstr ""
+
+#: issues/templates/issues/issue_list.html:42
+msgid "Unresolved"
+msgstr "未解决"
+
+#: issues/templates/issues/issue_list.html:45
+msgid "All"
+msgstr "全部"
+
+#: issues/templates/issues/issue_list.html:49
+msgid "Search issues..."
+msgstr "搜索问题..."
+
+#: issues/templates/issues/issue_list.html:178
+#, python-format
+msgid "with <b>%(event_count)s</b> events"
+msgstr "共 <b>%(event_count)s</b> 个事件"
+
+#: issues/templates/issues/issue_list.html:199
+msgid "Congratulations! You have no open issues."
+msgstr "恭喜你！现在没有打开的问题。"
+
+#: issues/templates/issues/issue_list.html:204
+#, python-format
+msgid "No %(state_filter)s issues found."
+msgstr "没有找到 %(state_filter)s 的问题。"
+
+#: issues/templates/issues/stacktrace.html:25
+msgid "No stacktrace available for this event."
+msgstr "这个事件没有栈追踪。"
+
+#: issues/templates/issues/tags.html:24
+msgid "No tags found for this issue."
+msgstr "这个问题没有标签。"
+
+#: projects/forms.py:17 teams/forms.py:14 users/forms.py:87
+msgid "Email"
+msgstr "电子邮件"
+
+#: projects/forms.py:19 projects/forms.py:48 teams/forms.py:16
+#: teams/forms.py:46
+msgid "Role"
+msgstr "角色"
+
+#: projects/forms.py:67
+#, python-format
+msgid "Default (%s, as per %s settings)"
+msgstr ""
+
+#: projects/forms.py:68 teams/forms.py:55 users/forms.py:151
+msgid "Send email alerts"
+msgstr "发送邮件通知"
+
+#: projects/forms.py:89
+msgctxt "Project"
+msgid "Name"
+msgstr "项目名称"
+
+#: projects/forms.py:90 teams/forms.py:76
+msgid "Visibility"
+msgstr "可见性"
+
+#: projects/forms.py:92
+msgid "Retention max event count"
+msgstr "事件保留上限"
+
+#: projects/forms.py:93
+msgid "The maximum number of events to store before evicting."
+msgstr "超过此数量的事件将会被丢弃。"
+
+#: projects/forms.py:101
+msgid "DSN (read-only)"
+msgstr "DSN (只读)"
+
+#. Translators: {link} will be replaced with an HTML link; place it where it reads naturally.
+#, python-brace-format
+msgid "Use the DSN to {link}."
+msgstr "使用 DSN 来{link}。"
+
+#: projects/forms.py:103
+msgid "set up the SDK"
+msgstr "设置 SDK"
+
+#: projects/forms.py:115
+#. Translators: This text is followed by a clickable link. Adjust punctuation/spacing naturally.
+msgid "You don't have any teams yet; "
+msgstr "你还没有任何团队；"
+
+#: projects/forms.py:115
+msgid "Create a team first."
+msgstr "先创建一个团队。"
+
+#: projects/models.py:50 teams/models.py:9
+msgid "Member"
+msgstr "成员"
+
+#: projects/models.py:51 projects/templates/projects/project_list.html:87
+#: projects/templates/projects/project_members.html:51 teams/models.py:10
+#: teams/templates/teams/team_list.html:70
+#: teams/templates/teams/team_members.html:51 theme/templates/base.html:45
+msgid "Admin"
+msgstr "管理员"
+
+#: projects/models.py:56 teams/models.py:15
+msgid "Joinable"
+msgstr "可加入"
+
+#: projects/models.py:60 teams/models.py:20
+msgid "Discoverable"
+msgstr "可发现"
+
+#: projects/models.py:64 teams/templates/teams/team_members.html:25
+msgid "Team Members"
+msgstr "团队成员"
+
+#: projects/models.py:113
+msgid "Which users can see this project and its issues?"
+msgstr "哪些用户可以看到这个项目以及它们的问题？"
+
+#: projects/templates/projects/project_alerts_setup.html:5
+#: projects/templates/projects/project_alerts_setup.html:25
+msgid "Alerts"
+msgstr "通知"
+
+#: projects/templates/projects/project_alerts_setup.html:28
+msgid "Add"
+msgstr "添加"
+
+#: projects/templates/projects/project_alerts_setup.html:40
+msgid "Messaging Services"
+msgstr "消息服务"
+
+#: projects/templates/projects/project_alerts_setup.html:68
+msgctxt "Alerts"
+msgid "Test"
+msgstr "测试"
+
+#: projects/templates/projects/project_alerts_setup.html:69
+msgctxt "Alerts"
+msgid "Remove"
+msgstr "移除"
+
+#: projects/templates/projects/project_alerts_setup.html:78
+msgid "No Messaging Services Configured."
+msgstr "没有已配置的消息通知服务。"
+
+#: projects/templates/projects/project_alerts_setup.html:78
+msgid "Add Messaging Service"
+msgstr "添加消息服务"
+
+#: projects/templates/projects/project_alerts_setup.html:92
+msgctxt "Alerts"
+msgid "Settings"
+msgstr "项目设置"
+
+#: projects/templates/projects/project_alerts_setup.html:93
+#: projects/templates/projects/project_members.html:90
+msgid "Back to Projects"
+msgstr "返回项目列表"
+
+#: projects/templates/projects/project_edit.html:6
+#: teams/templates/teams/team_edit.html:6
+#: users/templates/users/user_edit.html:6
+msgid "Edit"
+msgstr "编辑"
+
+#: projects/templates/projects/project_edit.html:14
+#: projects/templates/projects/project_edit.html:53
+msgid "Delete Project"
+msgstr "删除项目"
+
+#: projects/templates/projects/project_edit.html:17
+msgid ""
+"Are you sure you want to delete this project? This action cannot be undone "
+"and will delete all associated data."
+msgstr "确定删除该项目？该操作不可撤销。"
+
+#: projects/templates/projects/project_edit.html:38
+#, python-format
+msgid "Settings (%(project_name)s)"
+msgstr "项目设置 (%(project_name)s)"
+
+#: projects/templates/projects/project_edit.html:42
+#, python-format
+msgid "Project settings for \"%(project_name)s\"."
+msgstr "项目 \"%(project_name)s\" 的设置。"
+
+#: projects/templates/projects/project_edit.html:51
+#: projects/templates/projects/project_member_settings.html:41
+#: projects/templates/projects/project_new.html:26
+#: teams/templates/teams/team_edit.html:29
+#: teams/templates/teams/team_member_settings.html:41
+#: teams/templates/teams/team_new.html:24
+#: users/templates/users/preferences.html:34
+#: users/templates/users/user_edit.html:27
+msgid "Save"
+msgstr "保存"
+
+#: projects/templates/projects/project_list.html:5
+#: projects/templates/projects/project_list.html:14
+#: theme/templates/base.html:37
+msgid "Projects"
+msgstr "项目"
+
+#: projects/templates/projects/project_list.html:21
+#: projects/templates/projects/project_new.html:6
+#: projects/templates/projects/project_new.html:18
+msgid "New Project"
+msgstr "创建新项目"
+
+#: projects/templates/projects/project_list.html:42
+msgid "My Projects"
+msgstr "我的项目"
+
+#: projects/templates/projects/project_list.html:44
+msgid "Team Projects"
+msgstr "团队项目"
+
+#: projects/templates/projects/project_list.html:45
+msgid "Other Projects"
+msgstr "其他项目"
+
+#: projects/templates/projects/project_list.html:75
+#: teams/templates/teams/team_list.html:58
+msgid "members"
+msgstr "个成员"
+
+#: projects/templates/projects/project_list.html:78
+#: teams/templates/teams/team_list.html:60
+msgid "my settings"
+msgstr "我的设置"
+
+#: projects/templates/projects/project_list.html:85
+msgid "You're&nbsp;invited!"
+msgstr "您收到了邀请！"
+
+#: projects/templates/projects/project_list.html:155
+#: teams/templates/teams/team_list.html:105
+msgid "Invitation"
+msgstr "接受邀请"
+
+#: projects/templates/projects/project_list.html:159
+#: projects/templates/projects/project_members.html:62
+#: teams/templates/teams/team_list.html:109
+#: teams/templates/teams/team_members.html:62
+msgid "Leave"
+msgstr "离开"
+
+#: projects/templates/projects/project_list.html:165
+#: teams/templates/teams/team_list.html:115
+msgid "Join"
+msgstr "加入"
+
+#: projects/templates/projects/project_list.html:175
+msgid "No projects found."
+msgstr "没有找到项目。"
+
+#: projects/templates/projects/project_member_settings.html:6
+msgid "Member settings"
+msgstr "成员设置"
+
+#: projects/templates/projects/project_member_settings.html:27
+#: teams/templates/teams/team_member_settings.html:27
+msgid "Membership settings"
+msgstr "成员设置"
+
+#: projects/templates/projects/project_member_settings.html:32
+#, python-format
+msgid "Your membership settings for project \"%(project_name)s\"."
+msgstr "你作为项目 \"%(project_name)s\" 的成员设置。"
+
+#: projects/templates/projects/project_member_settings.html:34
+#, python-format
+msgid "Settings for project \"%(project_name)s\" and user %(username)s."
+msgstr "用户 %(username)s 作为项目 \"%(project_name)s\" 的成员设置。"
+
+#: projects/templates/projects/project_members.html:25
+msgid "Project Members"
+msgstr "项目成员"
+
+#: projects/templates/projects/project_members.html:28
+#: projects/templates/projects/project_members_invite.html:50
+#: teams/templates/teams/team_members.html:28
+#: teams/templates/teams/team_members_invite.html:52
+msgid "Invite Member"
+msgstr "邀请成员"
+
+#: projects/templates/projects/project_members.html:49
+#: teams/templates/teams/team_members.html:49
+msgid "Invitation pending"
+msgstr "等待同意邀请"
+
+#: projects/templates/projects/project_members.html:59
+#: teams/templates/teams/team_members.html:59
+msgid "Reinvite"
+msgstr "重新邀请"
+
+#: projects/templates/projects/project_members.html:64
+#: teams/templates/teams/team_members.html:64
+msgid "Remove"
+msgstr "移除团队"
+
+#: projects/templates/projects/project_members.html:75
+#: teams/templates/teams/team_members.html:75
+msgid "No members yet."
+msgstr "当前还没有成员。"
+
+#: projects/templates/projects/project_members.html:75
+#: teams/templates/teams/team_members.html:75
+msgid "Invite someone</a>."
+msgstr "邀请成员</a>。"
+
+#: projects/templates/projects/project_members.html:89
+#, python-format
+msgid " %(team_name)s Members"
+msgstr "%(team_name)s 团队的成员"
+
+#: projects/templates/projects/project_members_accept.html:18
+msgid "Invitation to"
+msgstr "受邀加入"
+
+#: projects/templates/projects/project_members_accept.html:22
+#, python-format
+msgid ""
+"You have been invited to join the project \"%(project_name)s\" in the role "
+"of \"%(role)s\". Please confirm by clicking the button below."
+msgstr ""
+"您正在作为 \"%(role)s\" 被邀请加入项目 \"%(project_name)s\" 项目的角色。请单"
+"击下面的按钮确认。"
+
+#: projects/templates/projects/project_members_accept.html:25
+msgid "Accept"
+msgstr "接受"
+
+#: projects/templates/projects/project_members_accept.html:26
+msgid "Decline"
+msgstr "拒绝"
+
+#: projects/templates/projects/project_members_invite.html:26
+#, python-format
+msgid "Invite members (%(project_name)s)"
+msgstr "邀请成员 (%(project_name)s)"
+
+#: projects/templates/projects/project_members_invite.html:30
+#, python-format
+msgid ""
+"Invite a member to join the project \"%(project_name)s\". They will receive "
+"an email with a link to join."
+msgstr ""
+"邀请一名新的成员加入项目 \"%(project_name)s\"。对方将收到一封含有加入团队链接"
+"的电子邮件。"
+
+#: projects/templates/projects/project_members_invite.html:51
+#: teams/templates/teams/team_members_invite.html:53
+msgid "Invite and add another"
+msgstr "邀请并继续添加"
+
+#: projects/views.py:82
+#, python-format
+msgid "You have joined the project \"%s\""
+msgstr "你已经加入了项目 \"%s\""
+
+#: teams/forms.py:54
+#, python-format
+msgid "User-default (%s)"
+msgstr "用户缺省 (%s)"
+
+#: teams/forms.py:75
+msgctxt "Team"
+msgid "Name"
+msgstr "团队名称"
+
+#: teams/models.py:23
+msgid "Hidden"
+msgstr ""
+
+#: teams/models.py:33
+msgid "Which users can see this team and its issues?"
+msgstr "哪些用户可以看到这个团队以及它们的问题？"
+
+#: teams/templates/teams/team_edit.html:18
+#, python-format
+msgid "Settings (%(team_name)s)"
+msgstr "团队设置 (%(team_name)s)"
+
+#: teams/templates/teams/team_edit.html:22
+#, python-format
+msgid "Team settings for \"%(team_name)s\"."
+msgstr "团队 \"%(team_name)s\" 的设置。"
+
+#: teams/templates/teams/team_list.html:5
+#: teams/templates/teams/team_list.html:14 theme/templates/base.html:34
+msgid "Teams"
+msgstr "团队"
+
+#: teams/templates/teams/team_list.html:21
+#: teams/templates/teams/team_new.html:18
+msgid "New Team"
+msgstr "创建新团队"
+
+#: teams/templates/teams/team_list.html:32
+msgid "My Teams"
+msgstr "我的团队"
+
+#: teams/templates/teams/team_list.html:33
+msgid "Other Teams"
+msgstr "其他团队"
+
+#: teams/templates/teams/team_list.html:57
+msgid "projects"
+msgstr "个项目"
+
+#: teams/templates/teams/team_list.html:125
+msgid "No teams found."
+msgstr "没有找到团队。"
+
+#: teams/templates/teams/team_member_settings.html:32
+#, python-format
+msgid "Your membership settings for team \"%(team_name)s\"."
+msgstr "你作为团队 \"%(team_name)s\" 的成员设置。"
+
+#: teams/templates/teams/team_member_settings.html:34
+#, python-format
+msgid "Settings for team \"%(team_name)s\" and user %(username)s."
+msgstr "用户 %(username)s 作为团队 \"%(team_name)s\" 的成员设置。"
+
+#: teams/templates/teams/team_members.html:5
+msgid "Members"
+msgstr "成员"
+
+#: teams/templates/teams/team_members.html:89
+msgid "Back to Teams"
+msgstr "返回团队列表"
+
+#: teams/templates/teams/team_members_invite.html:28
+#, python-format
+msgid "Invite members (%(team_name)s)"
+msgstr "邀请成员 (%(team_name)s)"
+
+#: teams/templates/teams/team_members_invite.html:32
+#, python-format
+msgid ""
+"Invite a member to join the team \"%(team_name)s\". They will receive an "
+"email with a link to join."
+msgstr ""
+"邀请一名新的成员加入团队 \"%(team_name)s\"。对方将收到一封含有加入团队链接的"
+"电子邮件。"
+
+#: teams/views.py:58
+#, python-format
+msgid "You have joined the team \"%s\""
+msgstr "你已经加入了团队 \"%s\""
+
+#: templates/admin/change_form_object_tools.html:7
+msgid "Raw"
+msgstr ""
+
+#: templates/admin/change_form_object_tools.html:9
+msgid "View on site"
+msgstr ""
+
+#: templates/bugsink/login.html:18
+msgid "Your username and password didn't match. Please try again."
+msgstr "用户名和密码不匹配，请重试"
+
+#: templates/bugsink/login.html:22
+msgid ""
+"Your account doesn't have access to this page. To proceed, please login with "
+"an account that has access."
+msgstr "您的帐户没有权限访问此页面，请登录具有权限的账户后重试"
+
+#: templates/bugsink/login.html:24
+msgid "Please login to see this page."
+msgstr "请登录后查看此页面"
+
+#: templates/bugsink/login.html:34
+msgid "Username"
+msgstr "用户名"
+
+#: templates/bugsink/login.html:40
+msgid "Password"
+msgstr "密码"
+
+#: templates/bugsink/login.html:43 theme/templates/base.html:54
+msgid "Login"
+msgstr "登录"
+
+#: templates/bugsink/login.html:48
+msgid "Forgot password?"
+msgstr "忘记密码？"
+
+#: templates/bugsink/login.html:49
+msgid "Create an account"
+msgstr "创建一个新账户"
+
+#: templates/bugsink/settings.html:7
+msgid "Settings"
+msgstr "设置"
+
+#: templates/bugsink/settings.html:14
+msgid "Site Settings"
+msgstr "站点设置"
+
+#: theme/templates/base.html:49 users/templates/users/user_list.html:45
+#: users/templates/users/user_list.html:63
+msgid "Users"
+msgstr "用户"
+
+#: theme/templates/base.html:50
+msgid "Tokens"
+msgstr "令牌"
+
+#: theme/templates/base.html:56
+msgid "Preferences"
+msgstr "偏好"
+
+#: theme/templates/base.html:57
+msgid "Log out"
+msgstr "登出"
+
+#: users/forms.py:17
+msgid "Yes"
+msgstr "是"
+
+#: users/forms.py:18
+msgid "No"
+msgstr "否"
+
+#: users/forms.py:137
+msgid "Auto (browser preference)"
+msgstr "自动（浏览器偏好）"
+
+#: users/forms.py:153
+msgid "Theme preference"
+msgstr "主题偏好"
+
+#: users/forms.py:159
+msgid "Language"
+msgstr "语言"
+
+#: users/models.py:21
+msgid "System Default"
+msgstr "系统缺省"
+
+#: users/models.py:22
+msgid "Light"
+msgstr "明亮"
+
+#: users/models.py:23
+msgid "Dark"
+msgstr "黑暗"
+
+#: users/templates/users/confirm_email.html:18
+msgid "Confirm your email address by clicking the button below."
+msgstr ""
+
+#: users/templates/users/confirm_email.html:23
+msgid "Confirm"
+msgstr "确认"
+
+#: users/templates/users/confirm_email_sent.html:17
+msgid ""
+"A verification email has been sent to your email address. Please verify your "
+"email address to complete the registration process."
+msgstr ""
+
+#: users/templates/users/logged_out.html:16
+msgid "You have been logged out."
+msgstr "你已经从系统中登出。"
+
+#: users/templates/users/logged_out.html:16
+msgid "Log in again</a>."
+msgstr "重新登录</a>。"
+
+#: users/templates/users/preferences.html:27
+msgid "User Preferences"
+msgstr "用户偏好"
+
+#: users/templates/users/request_reset_password.html:23
+#: users/templates/users/reset_password.html:27
+msgid "Reset password"
+msgstr "重置密码"
+
+#: users/templates/users/request_reset_password.html:27
+#: users/templates/users/reset_password.html:32
+msgid "Log in instead"
+msgstr ""
+
+#: users/templates/users/resend_confirmation.html:23
+msgid "Resend verification email"
+msgstr ""
+
+#: users/templates/users/reset_password_email_sent.html:16
+msgid ""
+"A password reset link has been sent to your email address. Please check your "
+"inbox and follow the instructions to reset your password."
+msgstr ""
+"一封含有密码重置链接的电子邮件已经发送给您。请您检查您的收件箱并按说明重置密"
+"码。"
+
+#: users/templates/users/user_edit.html:22
+#, python-format
+msgid "Settings for %(username)s."
+msgstr "%(username)s 的设置。"
+
+#: users/templates/users/user_list.html:16
+msgid ""
+"Are you sure you want to delete this user? This action cannot be undone."
+msgstr "确定删除该用户？该操作不可撤销。"
+
+#: users/templates/users/user_list.html:72
+msgid "Superuser"
+msgstr "超级管理员"
+
+#: users/views.py:237
+msgid "Updated preferences"
+msgstr "偏好已更新"
+
+# Fix on https://code.djangoproject.com/ticket/36579
+msgid "yes,no,maybe"
+msgstr "是,否,也许"
diff --git a/performance/bursty_data.py b/performance/bursty_data.py
index 664142d..eb79e5f 100644
--- a/performance/bursty_data.py
+++ b/performance/bursty_data.py
@@ -1,6 +1,7 @@
 import datetime
 import math
-import random
+
+from bugsink.utils import nc_rnd
 
 
 # a way to generate some bursty streams of points-in-time.
@@ -26,8 +27,8 @@ def generate_bursty_data(nr_of_waves=1, base_amplitude=1, expected_nr_of_bursts=
         periodic_pattern = (1 + math.sin(i / period * 2 * math.pi)) / 2
 
         # Introduce burst with probability 'burst_prob'
-        if random.random() < burst_prob:
-            burst = abs(random.gauss(0, burst_amplitude))
+        if nc_rnd.random() < burst_prob:
+            burst = abs(nc_rnd.gauss(0, burst_amplitude))
             buckets[i] = periodic_pattern + burst
         else:
             buckets[i] = periodic_pattern
@@ -61,6 +62,6 @@ def buckets_to_points_in_time(buckets, begin, end, total_points):
         bucket_points = round(bucket_points)
 
         for j in range(bucket_points):
-            points.append(begin + datetime.timedelta(seconds=bucket_size * (i + random.uniform(0, 1))))
+            points.append(begin + datetime.timedelta(seconds=bucket_size * (i + nc_rnd.uniform(0, 1))))
 
     return sorted(points)
diff --git a/phonehome/migrations/0002_installation_email_quota_usage.py b/phonehome/migrations/0002_installation_email_quota_usage.py
new file mode 100644
index 0000000..1392f1a
--- /dev/null
+++ b/phonehome/migrations/0002_installation_email_quota_usage.py
@@ -0,0 +1,18 @@
+# Generated by Django 4.2.21 on 2025-07-28 12:04
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("phonehome", "0001_b_squashed_initial"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="installation",
+            name="email_quota_usage",
+            field=models.TextField(default='{"per_month": {}}'),
+        ),
+    ]
diff --git a/phonehome/models.py b/phonehome/models.py
index d51a57d..dbbcf20 100644
--- a/phonehome/models.py
+++ b/phonehome/models.py
@@ -1,6 +1,10 @@
+import json
 import uuid
 
 from django.db import models
+from bugsink.transaction import immediate_atomic
+
+from bugsink.app_settings import get_settings
 
 
 class Installation(models.Model):
@@ -12,6 +16,29 @@ class Installation(models.Model):
 
     silence_email_system_warning = models.BooleanField(default=False)
 
+    email_quota_usage = models.TextField(null=False, default='{"per_month": {}}')
+
+    @classmethod
+    @immediate_atomic(only_if_needed=True)  # minimalize write-lock-hogging (while being callable within atomic blocks)
+    def check_and_inc_email_quota(cls, date):
+        obj = cls.objects.first()
+
+        email_quota_usage = json.loads(obj.email_quota_usage)
+
+        key = date.strftime('%Y-%m')
+        if key not in email_quota_usage["per_month"]:
+            email_quota_usage['per_month'] = {key: 0}  # full overwrite: no need to keep old info around.
+
+        if (get_settings().MAX_EMAILS_PER_MONTH is not None
+                and email_quota_usage['per_month'][key] >= get_settings().MAX_EMAILS_PER_MONTH):
+            return False
+
+        email_quota_usage['per_month'][key] += 1
+
+        obj.email_quota_usage = json.dumps(email_quota_usage)
+        obj.save()
+        return True
+
 
 class OutboundMessage(models.Model):
     attempted_at = models.DateTimeField(auto_now_add=True)
diff --git a/pre-commit b/pre-commit
index 3c7a0c5..af7b5d4 100755
--- a/pre-commit
+++ b/pre-commit
@@ -1,8 +1,32 @@
 #!/bin/sh
 
-files=`git diff --cached --name-status`
+# this script must be placed in .git/hooks/pre-commit for it to run automatically
+# it is put here in the repo so that it can be used by anyone who clones the repo
+# it assumes the environment to run `python manage.py tailwind build` is already set up
+# and activated
 
-. bin/activate
-python manage.py tailwind build
+should_run=$(git diff --cached --name-only -z | python tools/is_tracked_by_tailwind.py)
 
-git add theme/static/css/dist/styles.css
+if [ "$should_run" = "yes" ]; then
+    echo "Building Tailwind CSS..."
+    python manage.py tailwind build
+    git add theme/static/css/dist/styles.css
+else
+    echo "No relevant changes; skipping Tailwind build."
+fi
+
+# Check for trailing whitespace in staged files, fail if found
+
+git diff --cached --name-only --diff-filter=ACM | while IFS= read -r file; do
+    [ -f "$file" ] || continue
+
+    case "$file" in
+        *.py|*.js|*.ts|*.sh|*.md|*.txt|*.html|*.css)
+            if grep -qE '[[:space:]]+$' "$file"; then
+                echo "Commit aborted due to trailing whitespace."
+                echo "Fix it manually or use tools/strip-trailing-whitespace.sh"
+                exit 1
+            fi
+            ;;
+    esac
+done
diff --git a/projects/forms.py b/projects/forms.py
index 2acf971..2bc2861 100644
--- a/projects/forms.py
+++ b/projects/forms.py
@@ -2,7 +2,10 @@ from django import forms
 from django.contrib.auth import get_user_model
 from django.template.defaultfilters import yesno
 from django.urls import reverse
+from django.utils.translation import gettext_lazy as _
+from django.utils.html import format_html
 
+from bugsink.utils import assert_
 from teams.models import TeamMembership
 
 from .models import Project, ProjectMembership, ProjectRole
@@ -11,9 +14,10 @@ User = get_user_model()
 
 
 class ProjectMemberInviteForm(forms.Form):
-    email = forms.EmailField(label='Email', required=True)
+    email = forms.EmailField(label=_('Email'), required=True)
     role = forms.ChoiceField(
-        label='Role', choices=ProjectRole.choices, required=True, initial=ProjectRole.MEMBER, widget=forms.RadioSelect)
+        label=_('Role'), choices=ProjectRole.choices, required=True, initial=ProjectRole.MEMBER,
+        widget=forms.RadioSelect)
 
     def __init__(self, user_must_exist, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -40,7 +44,7 @@ class MyProjectMembershipForm(forms.ModelForm):
     def __init__(self, *args, **kwargs):
         edit_role = kwargs.pop("edit_role")
         super().__init__(*args, **kwargs)
-        assert self.instance is not None, "This form is only implemented for editing"
+        assert_(self.instance is not None, "This form is only implemented for editing")
 
         if not edit_role:
             del self.fields['role']
@@ -58,7 +62,7 @@ class MyProjectMembershipForm(forms.ModelForm):
             sea_defined_at = "user"
             sea_default = self.instance.user.send_email_alerts
 
-        empty_label = 'Default (%s, as per %s settings)' % (yesno(sea_default).capitalize(), sea_defined_at)
+        empty_label = _('Default (%s, as per %s settings)') % (yesno(sea_default).capitalize(), sea_defined_at)
         self.fields['send_email_alerts'].empty_label = empty_label
         self.fields['send_email_alerts'].widget.choices[0] = ("unknown", empty_label)
 
@@ -79,7 +83,7 @@ class ProjectForm(forms.ModelForm):
         team_qs = kwargs.pop("team_qs", None)
         super().__init__(*args, **kwargs)
 
-        self.fields["retention_max_event_count"].help_text = "The maximum number of events to store before evicting."
+        self.fields["retention_max_event_count"].help_text = _("The maximum number of events to store before evicting.")
         if self.instance is not None and self.instance.pk is not None:
             # for editing, we disallow changing the team. consideration: it's somewhat hard to see what the consequences
             # for authorization are (from the user's perspective).
@@ -87,10 +91,13 @@ class ProjectForm(forms.ModelForm):
 
             # for editing, the DSN is availabe, but read-only
             self.fields["dsn"].initial = self.instance.dsn
-            self.fields["dsn"].label = "DSN (read-only)"
-            self.fields["dsn"].help_text = 'Use the DSN to <a href="' +\
-                                           reverse('project_sdk_setup', kwargs={'project_pk': self.instance.pk}) +\
-                                           '" class="text-cyan-800 font-bold">set up the SDK</a>.'
+            self.fields["dsn"].label = _("DSN (read-only)")
+            href = reverse('project_sdk_setup', kwargs={'project_pk': self.instance.pk})
+
+            self.fields["dsn"].help_text = format_html(
+                _("Use the DSN to {link}."),
+                link=format_html('<a href="{}" class="text-cyan-800 font-bold">{}</a>', href, _("set up the SDK")),
+            )
 
             # if we ever push slug to the form, editing it should probably be disallowed as well (but mainly because it
             # has consequences on the issue's short identifier)
@@ -101,9 +108,11 @@ class ProjectForm(forms.ModelForm):
             # it suggests at least somewhere that teams are a thing)
             self.fields["team"].queryset = team_qs
             if team_qs.count() == 0:
-                self.fields["team"].help_text = 'You don\'t have any teams yet; <a href="' +\
-                                                reverse("team_new") +\
-                                                '" class="text-cyan-800 font-bold">Create a team first.</a>'
+                href = reverse("team_new")
+                self.fields["team"].help_text = format_html(
+                    "{}{}", _("You don't have any teams yet; "),
+                    format_html('<a href="{}" class="text-cyan-800 font-bold">{}</a>', href, _("Create a team first.")))
+
             elif team_qs.count() == 1:
                 self.fields["team"].initial = team_qs.first()
 
diff --git a/projects/models.py b/projects/models.py
index ac8c367..bcf34c4 100644
--- a/projects/models.py
+++ b/projects/models.py
@@ -3,6 +3,7 @@ import uuid
 from django.db import models
 from django.conf import settings
 from django.utils.text import slugify
+from django.utils.translation import gettext_lazy as _, pgettext_lazy
 
 from bugsink.app_settings import get_settings
 from bugsink.transaction import delay_on_commit
@@ -46,21 +47,21 @@ from .tasks import delete_project_deps
 
 
 class ProjectRole(models.IntegerChoices):
-    MEMBER = 0
-    ADMIN = 1
+    MEMBER = 0, _("Member")
+    ADMIN = 1, _("Admin")
 
 
 class ProjectVisibility(models.IntegerChoices):
     # PUBLIC = 0  # anyone can see the project and its members; not sure if I want this or always require click-in
-    JOINABLE = 1  # anyone can join
+    JOINABLE = 1, _("Joinable")  # anyone can join
 
     # the project's existance is visible, but the project itself is not. the idea would be that you can "request to
     # join" (which is currently not implemented as a button, but you could do it 'out of bands' i.e. via email or chat).
-    DISCOVERABLE = 10
+    DISCOVERABLE = 10, _("Discoverable")
 
     # the project's exsitance is only visible to team-members; you still need to explicitly click "join" which will
     # immediately make you a member
-    TEAM_MEMBERS = 99
+    TEAM_MEMBERS = 99, _("Team Members")
 
     # having projects that are part of a certain team, but not visible to the team members, was considered, but
     # rejected. The basic thinking on the rejection is: it would hollow out the concept of Team to the point of
@@ -75,7 +76,7 @@ class Project(models.Model):
 
     team = models.ForeignKey("teams.Team", blank=False, null=True, on_delete=models.SET_NULL)
 
-    name = models.CharField(max_length=255, blank=False, null=False, unique=True)
+    name = models.CharField(pgettext_lazy("Project", "Name"), max_length=255, blank=False, null=False, unique=True)
     slug = models.SlugField(max_length=50, blank=False, null=False, unique=True)
     is_deleted = models.BooleanField(default=False)
 
@@ -108,15 +109,15 @@ class Project(models.Model):
 
     # visibility
     visibility = models.IntegerField(
-        choices=ProjectVisibility.choices, default=ProjectVisibility.TEAM_MEMBERS,
-        help_text="Which users can see this project and its issues?")
+        _("Visibility"), choices=ProjectVisibility.choices, default=ProjectVisibility.TEAM_MEMBERS,
+        help_text=_("Which users can see this project and its issues?"))
 
     # ingestion/digestion quota
     quota_exceeded_until = models.DateTimeField(null=True, blank=True)
     next_quota_check = models.PositiveIntegerField(null=False, default=0)
 
     # retention
-    retention_max_event_count = models.PositiveIntegerField(default=10_000)
+    retention_max_event_count = models.PositiveIntegerField(_("Retention max event count"), default=10_000)
 
     def __str__(self):
         return self.name
@@ -178,9 +179,9 @@ class ProjectMembership(models.Model):
     project = models.ForeignKey(Project, on_delete=models.DO_NOTHING)
     user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
 
-    send_email_alerts = models.BooleanField(default=None, null=True)
+    send_email_alerts = models.BooleanField(_("Send email alerts"), default=None, null=True)
 
-    role = models.IntegerField(choices=ProjectRole.choices, default=ProjectRole.MEMBER)
+    role = models.IntegerField(_("Role"), choices=ProjectRole.choices, default=ProjectRole.MEMBER)
     accepted = models.BooleanField(default=False)
 
     def __str__(self):
diff --git a/projects/templates/mails/project_membership_invite.html b/projects/templates/mails/project_membership_invite.html
index 6193b5d..3dbaf4a 100644
--- a/projects/templates/mails/project_membership_invite.html
+++ b/projects/templates/mails/project_membership_invite.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/projects/templates/mails/project_membership_invite_new_user.html b/projects/templates/mails/project_membership_invite_new_user.html
index ca9c5d1..5ffd265 100644
--- a/projects/templates/mails/project_membership_invite_new_user.html
+++ b/projects/templates/mails/project_membership_invite_new_user.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/projects/templates/projects/project_alerts_setup.html b/projects/templates/projects/project_alerts_setup.html
index fb1de1f..293690c 100644
--- a/projects/templates/projects/project_alerts_setup.html
+++ b/projects/templates/projects/project_alerts_setup.html
@@ -1,7 +1,8 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
-{% block title %}Alerts · {{ project.name }}  · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Alerts" %} · {{ project.name }}  · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -21,10 +22,10 @@
         {% endif %}
 
         <div class="flex">
-            <h1 class="text-4xl mt-4 font-bold">{{ project.name }} · Alerts</h1>
+            <h1 class="text-4xl mt-4 font-bold">{{ project.name }} · {% translate "Alerts" %}</h1>
 
             <div class="ml-auto mt-6">
-                <a class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url "project_messaging_service_add" project_pk=project.pk %}">Add</a>
+                <a class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url "project_messaging_service_add" project_pk=project.pk %}">{% translate "Add" %}</a>
             </div>
         </div>
 
@@ -36,21 +37,36 @@
           <tbody>
                 <thead>
                 <tr class="bg-slate-200 dark:bg-slate-800">
-                    <th class="w-full p-4 text-left text-xl" colspan="2">Messaging Services</th>
+                    <th class="w-full p-4 text-left text-xl" colspan="2">{% translate "Messaging Services" %}</th>
                 </tr>
 
                 {% for service_config in service_configs %}
                 <tr class="bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-700 border-b-2">
                 <td class="w-full p-4">
-                    <div>
-                        <a href="{% url "project_messaging_service_edit" project_pk=project.pk service_pk=service_config.pk %}" class="text-xl text-cyan-500 dark:text-cyan-300 font-bold">{{ service_config.display_name }}</a>
+                    <div class="flex items-center">
+                        <div class="flex-grow">
+                            <a href="{% url "project_messaging_service_edit" project_pk=project.pk service_pk=service_config.pk %}" class="text-xl text-cyan-500 dark:text-cyan-300 font-bold">{{ service_config.display_name }}</a>
+                            {% if service_config.has_recent_failure %}
+                                <div class="text-sm text-red-600 dark:text-red-400 mt-1">
+                                    <span class="inline-flex items-center leading-none">
+                                        <svg class="w-4 h-4 mr-1 align-middle" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
+                                            <path fill-rule="evenodd" d="M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z" clip-rule="evenodd"></path>
+                                        </svg>
+                                        <span>Last alert failed ({{ service_config.last_failure_timestamp|date:"M j, H:i" }})</span>
+                                        <a href="{% url "project_messaging_service_edit" project_pk=project.pk service_pk=service_config.pk %}#failure-details"
+                                           class="text-red-700 dark:text-red-300 underline ml-2">View details</a>
+                                    </span>
+                                </div>
+                            {% endif %}
+
+                        </div>
                     </div>
                 </td>
 
                 <td class="p-4">
                     <div class="flex justify-end">
-                        <button name="action" value="test:{{ service_config.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Test</button>
-                        <button name="action" value="remove:{{ service_config.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Remove</button>
+                        <button name="action" value="test:{{ service_config.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Test" context "Alerts" %}</button>
+                        <button name="action" value="remove:{{ service_config.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Remove" context "Alerts" %}</button>
                     </div>
                 </td>
 
@@ -59,7 +75,7 @@
                 <tr class="bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-700 border-b-2">
                 <td class="w-full p-4">
                     <div>
-                        No Messaging Services Configured. <a href="{% url "project_messaging_service_add" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">Add Messaging Service</a>.
+                        {% translate "No Messaging Services Configured." %} <a href="{% url "project_messaging_service_add" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Add Messaging Service" %}</a>.
                     </div>
                 </td>
                 </tr>
@@ -73,8 +89,8 @@
 
     <div class="flex flex-direction-row">
         <div class="ml-auto py-8 pr-4">
-            <a href="{% url "project_edit" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">Settings</a>
-            <span class="font-bold text-slate-500 dark:text-slate-300">|</span> <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold">Back to Projects</a>
+            <a href="{% url "project_edit" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Settings" context "Alerts" %}</a>
+            <span class="font-bold text-slate-500 dark:text-slate-300">|</span> <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Back to Projects" %}</a>
         </div>
     </div>
 </div>
diff --git a/projects/templates/projects/project_edit.html b/projects/templates/projects/project_edit.html
index a83c738..7069c68 100644
--- a/projects/templates/projects/project_edit.html
+++ b/projects/templates/projects/project_edit.html
@@ -1,8 +1,9 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
-{% block title %}Edit {{ project.name }} · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Edit" %} {{ project.name }} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -10,14 +11,14 @@
 <div id="deleteModal" class="hidden fixed inset-0 bg-slate-600 dark:bg-slate-900 bg-opacity-50 dark:bg-opacity-50 overflow-y-auto h-full w-full z-50 flex items-center justify-center">
     <div class="relative p-6 border border-slate-300 dark:border-slate-600 w-96 shadow-lg rounded-md bg-white dark:bg-slate-900">
         <div class="text-center m-4">
-            <h3 class="text-2xl font-semibold text-slate-800 dark:text-slate-100 mt-3 mb-4">Delete Project</h3>
+            <h3 class="text-2xl font-semibold text-slate-800 dark:text-slate-100 mt-3 mb-4">{% translate "Delete Project" %}</h3>
             <div class="mt-4 mb-6">
                 <p class="text-slate-700 dark:text-slate-300">
-                    Are you sure you want to delete this project? This action cannot be undone and will delete all associated data.
+                    {% translate "Are you sure you want to delete this project? This action cannot be undone and will delete all associated data." %}
                 </p>
             </div>
             <div class="flex items-center justify-center space-x-4 mb-4">
-                <button id="cancelDelete" class="text-cyan-500 dark:text-cyan-300 font-bold">Cancel</button>
+                <button id="cancelDelete" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Cancel" %}</button>
                 <form method="post" action="." id="deleteForm">
                     {% csrf_token %}
                     <input type="hidden" name="action" value="delete">
@@ -34,11 +35,11 @@
         {% csrf_token %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">Settings ({{ project.name }})</h1>
+            <h1 class="text-4xl my-4 font-bold">{% blocktranslate with project_name=project.name %}Settings ({{ project_name }}){% endblocktranslate %}</h1>
         </div>
 
         <div class="mt-4 mb-4">
-            Project settings for "{{ project.name }}".
+            {% blocktranslate with project_name=project.name %}Project settings for "{{ project_name }}".{% endblocktranslate %}
         </div>
 
         {% tailwind_formfield form.name %}
@@ -47,9 +48,9 @@
         {% tailwind_formfield form.dsn %}
 
         <div class="flex items-center mt-4">
-            <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
-            <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a>          
-            <button type="button" id="deleteButton" class="font-bold py-2 px-4 rounded bg-red-500 dark:bg-red-700 text-white border-2 border-red-600 dark:border-red-400 hover:bg-red-600 dark:hover:bg-red-800 active:ring ml-4 ml-auto">Delete Project</button>
+            <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
+            <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a>
+            <button type="button" id="deleteButton" class="font-bold py-2 px-4 rounded bg-red-500 dark:bg-red-700 text-white border-2 border-red-600 dark:border-red-400 hover:bg-red-600 dark:hover:bg-red-800 active:ring ml-4 ml-auto">{% translate "Delete Project" %}</button>
         </div>
         </form>
     </div>
diff --git a/projects/templates/projects/project_list.html b/projects/templates/projects/project_list.html
index 86e79f4..7995aef 100644
--- a/projects/templates/projects/project_list.html
+++ b/projects/templates/projects/project_list.html
@@ -1,7 +1,8 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
-{% block title %}Projects · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Projects" %} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -10,14 +11,14 @@
 <div class="m-4 flex flex-row items-end">
 
     <div><!-- top, LHS (h1) -->
-        <h1 class="text-4xl mt-4 font-bold">Projects</h1>
+        <h1 class="text-4xl mt-4 font-bold">{% translate "Projects" %}</h1>
     </div>
 
     {# align to bottom #}
     <div class="ml-auto"><!-- top, RHS (buttons) -->
         {% if can_create %}
         <div>
-            <a class="block font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url 'project_new' %}">New Project</a>
+            <a class="block font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url 'project_new' %}">{% translate "New Project" %}</a>
         </div>
         {% endif %}
     </div> {# top, RHS (buttons) #}
@@ -38,10 +39,10 @@
 
 <div class="flex bg-slate-50 dark:bg-slate-800 mt-4 items-end">
     <div class="flex">
-    <a href="{% url "project_list_mine" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "mine" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">My Projects</div></a>
+    <a href="{% url "project_list_mine" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "mine" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">{% translate "My Projects" %}</div></a>
     {% if not app_settings.SINGLE_USER %}
-    <a href="{% url "project_list_teams" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "teams" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">Team Projects</div></a>
-    <a href="{% url "project_list_other" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "other" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">Other Projects</div></a>
+    <a href="{% url "project_list_teams" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "teams" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">{% translate "Team Projects" %}</div></a>
+    <a href="{% url "project_list_other" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "other" %}text-cyan-500 dark:text-cyan-300 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400{% endif %}">{% translate "Other Projects" %}</div></a>
     {% endif %}
     </div>
     {% comment %}
@@ -70,19 +71,19 @@
                 </div>
                 <div>
                     {{ project.team.name }}
-                    | {{ project.member_count }} members
+                    | {{ project.member_count }} {% translate "members" %}
                     {# | {{ project.open_issue_count }} open issues #}
                     {% if project.member %}
-                    | <a href="{% url 'project_member_settings' project_pk=project.id user_pk=request.user.id %}" class="font-bold text-cyan-500 dark:text-cyan-300">my settings</a>
+                    | <a href="{% url 'project_member_settings' project_pk=project.id user_pk=request.user.id %}" class="font-bold text-cyan-500 dark:text-cyan-300">{% translate "my settings" %}</a>
                     {% endif %}
                 </div>
             </td>
             <td class="pr-2 text-center">
                 {% if project.member %}
                     {% if not project.member.accepted %}
-                    <span class="bg-slate-100 dark:bg-slate-700 rounded-2xl px-4 py-2 ml-2 text-sm">You're&nbsp;invited!</span>
+                    <span class="bg-slate-100 dark:bg-slate-700 rounded-2xl px-4 py-2 ml-2 text-sm whitespace-nowrap">{% translate "You're&nbsp;invited!" %}</span>
                     {% elif project.member.is_admin %} {# NOTE: we intentionally hide admin-ness for non-accepted users; #}
-                    <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">Admin</span>
+                    <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm whitespace-nowrap">{% translate "Admin" %}</span>
                     {% endif %}
                 {% endif %}
             </td>
@@ -150,17 +151,17 @@
                 {% if project.member %}
                     {% if not project.member.accepted %}
                         <div>
-                            <a href="{% url 'project_members_accept' project_pk=project.id %}" class="font-bold text-cyan-500 dark:text-cyan-300">Invitation</a>
+                            <a href="{% url 'project_members_accept' project_pk=project.id %}" class="font-bold text-cyan-500 dark:text-cyan-300 whitespace-nowrap">{% translate "Invitation" %}</a>
                         </div>
                     {% else %}
                         <div>
-                            <button name="action" value="leave:{{ project.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Leave</button>
+                            <button name="action" value="leave:{{ project.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Leave" %}</button>
                         </div>
                     {% endif %}
                 {% else %}
                     {% if ownership_filter == "teams" or project.is_joinable or request.user.is_superuser %}{# ownership_filter check: you can always join your own team's projects, so if you're looking at a list of them... #}
                         <div>
-                            <button name="action" value="join:{{ project.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2  dark:hover:bg-slate-700 active:ring rounded-md">Join</button>
+                            <button name="action" value="join:{{ project.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2  dark:hover:bg-slate-700 active:ring rounded-md whitespace-nowrap">{% translate "Join" %}</button>
                         </div>
                     {% endif %}
                 {% endif %}
@@ -170,7 +171,7 @@
             {% empty %}
             <tr class="bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-700 border-b-2">
             <td class="w-full p-4">
-                No projects found.
+                {% translate "No projects found." %}
             </td>
 
             </tr>
diff --git a/projects/templates/projects/project_member_settings.html b/projects/templates/projects/project_member_settings.html
index 64a3bf5..78f4bca 100644
--- a/projects/templates/projects/project_member_settings.html
+++ b/projects/templates/projects/project_member_settings.html
@@ -1,8 +1,9 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
-{% block title %}Member settings · {{ project.name }}  · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Member settings" %} · {{ project.name }}  · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -23,25 +24,25 @@
         {% endif %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">Membership settings</h1>
+            <h1 class="text-4xl my-4 font-bold">{% translate "Membership settings" %}</h1>
         </div>
 
         <div class="mt-4 mb-4">
             {% if this_is_you %}
-                Your membership settings for project "{{ project.name }}".
+                {% blocktranslate with project_name=project.name %}Your membership settings for project "{{ project_name }}".{% endblocktranslate %}
             {% else %}
-                Settings for project "{{ project.name }}" and user {{ user.username }}.
+                {% blocktranslate with project_name=project.name username=user.username %}Settings for project "{{ project_name }}" and user {{ username }}.{% endblocktranslate %}
             {% endif %}
         </div>
 
         {% tailwind_formfield form.role %}
         {% tailwind_formfield form.send_email_alerts %}
 
-        <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
+        <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
         {% if this_is_you %}
-            <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a> {# not quite perfect, because "you" can also click on yourself in the member list #}
+            <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a> {# not quite perfect, because "you" can also click on yourself in the member list #}
         {% else %}
-            <a href="{% url "project_members" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a>
+            <a href="{% url "project_members" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a>
         {% endif %}
         </form>
 
diff --git a/projects/templates/projects/project_members.html b/projects/templates/projects/project_members.html
index 1a283de..a940afa 100644
--- a/projects/templates/projects/project_members.html
+++ b/projects/templates/projects/project_members.html
@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Members · {{ project.name }}  · {{ site_title }}{% endblock %}
 
@@ -21,10 +22,10 @@
         {% endif %}
 
         <div class="flex">
-            <h1 class="text-4xl mt-4 font-bold">Project Members</h1>
+            <h1 class="text-4xl mt-4 font-bold">{% translate "Project Members" %}</h1>
 
             <div class="ml-auto mt-6">
-                <a class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url "project_members_invite" project_pk=project.pk %}">Invite Member</a>
+                <a class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url "project_members_invite" project_pk=project.pk %}">{% translate "Invite Member" %}</a>
             </div>
         </div>
 
@@ -45,9 +46,9 @@
                     <div>
                         <a href="{% url "project_member_settings" project_pk=project.pk user_pk=member.user_id %}" class="text-xl text-cyan-500 font-bold">{{ member.user.email }}</a>  {# "best name" perhaps later? #}
                         {% if not member.accepted %}
-                        <span class="bg-slate-100 dark:bg-slate-700 rounded-2xl px-4 py-2 ml-2 text-sm">Invitation pending</span>
+                        <span class="bg-slate-100 dark:bg-slate-700 rounded-2xl px-4 py-2 ml-2 text-sm">{% translate "Invitation pending" %}</span>
                         {% elif member.is_admin %} {# NOTE: we intentionally hide admin-ness for non-accepted users #}
-                        <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">Admin</span>
+                        <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">{% translate "Admin" %}</span>
                         {% endif %}
                     </div>
                 </td>
@@ -55,12 +56,12 @@
                 <td class="p-4">
                     <div class="flex justify-end">
                         {% if not member.accepted %}
-                            <button name="action" value="reinvite:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Reinvite</button>
+                            <button name="action" value="reinvite:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Reinvite" %}</button>
                         {% endif %}
                         {% if request.user == member.user %}
-                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Leave</button>
+                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Leave" %}</button>
                         {% else %}  {# NOTE: in our setup request_user_is_admin is implied because only admins may view the membership page #}
-                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Remove</button>
+                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Remove" %}</button>
                         {% endif %}
                     </div>
                 </td>
@@ -71,7 +72,7 @@
                 <td class="w-full p-4">
                     <div>
                         {# Note: this is already somewhat exceptional, because the usually you'll at least see yourself here (unless you're a superuser and a project has become memberless) #}
-                        No members yet. <a href="{% url "project_members_invite" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">Invite someone</a>.
+                        {% translate "No members yet." %} <a href="{% url "project_members_invite" project_pk=project.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Invite someone</a>." %}
                     </div>
                 </td>
                 </tr>
@@ -85,8 +86,8 @@
 
     <div class="flex flex-direction-row">
         <div class="ml-auto py-8 pr-4">
-            <a href="{% url "team_members" team_pk=project.team_id %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{{ project.team.name }} Members</a>
-            <span class="font-bold text-slate-500 dark:text-slate-300">|</span> <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold">Back to Projects</a>
+            <a href="{% url "team_members" team_pk=project.team_id %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% blocktranslate with team_name=project.team.name %} {{ team_name }} Members{% endblocktranslate %}</a>
+            <span class="font-bold text-slate-500 dark:text-slate-300">|</span> <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Back to Projects" %}</a>
         </div>
     </div>
 </div>
diff --git a/projects/templates/projects/project_members_accept.html b/projects/templates/projects/project_members_accept.html
index d08aacd..5f33613 100644
--- a/projects/templates/projects/project_members_accept.html
+++ b/projects/templates/projects/project_members_accept.html
@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Invitation · {{ project.name }}  · {{ site_title }}{% endblock %}
 
@@ -14,15 +15,15 @@
         {% csrf_token %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">Invitation to "{{ project.name }}"</h1>
+            <h1 class="text-4xl my-4 font-bold">{% translate "Invitation to" %} "{{ project.name }}"</h1>
         </div>
 
         <div class="mt-4 mb-4">
-            You have been invited to join the project "{{ project.name }}" in the role of "{{ membership.get_role_display }}". Please confirm by clicking the button below.
+            {% blocktranslate with project_name=project.name role=membership.get_role_display %}You have been invited to join the project "{{ project_name }}" in the role of "{{ role }}". Please confirm by clicking the button below.{% endblocktranslate %}
         </div>
 
-        <button name="action" value="accept" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Accept</button>
-        <button name="action" value="decline" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Decline</button>
+        <button name="action" value="accept" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Accept" %}</button>
+        <button name="action" value="decline" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">{% translate "Decline" %}</button>
         </form>
 
     </div>
diff --git a/projects/templates/projects/project_members_invite.html b/projects/templates/projects/project_members_invite.html
index 57968b6..05ba48d 100644
--- a/projects/templates/projects/project_members_invite.html
+++ b/projects/templates/projects/project_members_invite.html
@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}Invite Members · {{ project.name }}  · {{ site_title }}{% endblock %}
 
@@ -22,11 +23,11 @@
         {% endif %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">Invite members ({{ project.name }})</h1>
+            <h1 class="text-4xl my-4 font-bold">{% blocktranslate with project_name=project.name %}Invite members ({{ project_name }}){% endblocktranslate %}</h1>
         </div>
 
         <div class="mt-4 mb-4">
-            Invite a member to join the project "{{ project.name }}". They will receive an email with a link to join.
+            {% blocktranslate with project_name=project.name %}Invite a member to join the project "{{ project_name }}". They will receive an email with a link to join.{% endblocktranslate %}
         </div>
 
         {% tailwind_formfield_implicit form.email %}
@@ -46,9 +47,9 @@
             {% endif %}
         </div>
 
-        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Invite Member</button>
-        <button name="action" value="invite_and_add_another" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Invite and add another</button>
-        <a href="{% url "project_members" project_pk=project.pk %}" class="font-bold text-slate-500 dark:text-slate-300 ml-4">Cancel</a>
+        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Invite Member" %}</button>
+        <button name="action" value="invite_and_add_another" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">{% translate "Invite and add another" %}</button>
+        <a href="{% url "project_members" project_pk=project.pk %}" class="font-bold text-slate-500 dark:text-slate-300 ml-4">{% translate "Cancel" %}</a>
 
         </form>
 
diff --git a/projects/templates/projects/project_messaging_service_edit.html b/projects/templates/projects/project_messaging_service_edit.html
index b181bbb..bc7a969 100644
--- a/projects/templates/projects/project_messaging_service_edit.html
+++ b/projects/templates/projects/project_messaging_service_edit.html
@@ -25,6 +25,33 @@
             <h1 class="text-4xl my-4 font-bold">Messaging Service | {{ project.name }}</h1>
         </div>
 
+        {% if service_config.has_recent_failure %}
+        <div id="failure-details" class="bg-red-50 dark:bg-red-900 border-2 border-red-200 dark:border-red-700 p-4 rounded-lg mb-6">
+            <h2 class="text-xl font-bold text-red-800 dark:text-red-200 mb-2 flex items-center">
+                {# Nudge the icon down by 1px to align visually with the text baseline (it's heavy in the bottom, light on top) #}
+                <svg class="w-5 h-5 mr-2 relative top-[2px] align-middle" fill="currentColor" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">
+                    <path fill-rule="evenodd" d="M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z" clip-rule="evenodd"></path>
+                </svg>
+                Most Recent Message has Failed
+            </h2>
+
+            <div class="text-red-700 dark:text-red-300">
+                <p><strong>Last failure:</strong> {{ service_config.last_failure_timestamp|date:"F j, Y, g:i A" }}</p>
+                <p><strong>Error type:</strong> {{ service_config.last_failure_error_type }}</p>
+                {% if service_config.last_failure_status_code %}
+                    <p><strong>HTTP Status:</strong> {{ service_config.last_failure_status_code }}</p>
+                {% endif %}
+                <p><strong>Error message:</strong> {{ service_config.last_failure_error_message }}</p>
+                {% if service_config.last_failure_response_text %}
+                    <div class="mt-2">
+                        <p><strong>Response{% if service_config.last_failure_is_json %} (JSON){% endif %}:</strong></p>
+                        <pre class="p-2 rounded text-sm mt-1 overflow-x-auto">{{ service_config.last_failure_response_text }}</pre>
+                    </div>
+                {% endif %}
+            </div>
+        </div>
+        {% endif %}
+
         {% for field in form %}
             {% tailwind_formfield field %}
         {% endfor %}
diff --git a/projects/templates/projects/project_new.html b/projects/templates/projects/project_new.html
index bc7fcd1..99404d7 100644
--- a/projects/templates/projects/project_new.html
+++ b/projects/templates/projects/project_new.html
@@ -1,8 +1,9 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
-{% block title %}New project  · {{ site_title }}{% endblock %}
+{% block title %}{% translate "New Project" %} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -14,7 +15,7 @@
         {% csrf_token %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">New Project</h1>
+            <h1 class="text-4xl my-4 font-bold">{% translate "New Project" %}</h1>
         </div>
 
         {% tailwind_formfield form.team %}
@@ -22,8 +23,8 @@
         {% tailwind_formfield form.visibility %}
         {% tailwind_formfield form.retention_max_event_count %}
 
-        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
-        <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a>
+        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
+        <a href="{% url "project_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a>
 
         </form>
 
diff --git a/projects/views.py b/projects/views.py
index 541aa6f..16d3d49 100644
--- a/projects/views.py
+++ b/projects/views.py
@@ -11,12 +11,14 @@ from django.contrib import messages
 from django.contrib.auth import logout
 from django.urls import reverse
 from django.utils import timezone
+from django.utils.translation import gettext_lazy as _
 
 from users.models import EmailVerification
 from teams.models import TeamMembership, Team, TeamRole
 
 from bugsink.app_settings import get_settings, CB_ANYBODY, CB_MEMBERS, CB_ADMINS
 from bugsink.decorators import login_exempt, atomic_for_request_method
+from bugsink.utils import assert_
 
 from alerts.models import MessagingServiceConfig
 from alerts.forms import MessagingServiceConfigForm
@@ -77,7 +79,7 @@ def project_list(request, ownership_filter=None):
             if not project.is_joinable(user=request.user) and not request.user.is_superuser:
                 raise PermissionDenied("This project is not joinable")
 
-            messages.success(request, 'You have joined the project "%s"' % project.name)
+            messages.success(request, _('You have joined the project "%s"') % project.name)
             ProjectMembership.objects.create(
                 project_id=project_pk, user_id=request.user.id, role=ProjectRole.MEMBER, accepted=True)
             return redirect('project_member_settings', project_pk=project_pk, user_pk=request.user.id)
@@ -415,7 +417,7 @@ def project_sdk_setup(request, project_pk, platform=""):
     # NOTE about lexers:: I have bugsink/pyments_extensions; but the platforms mentioned there don't necessarily map to
     # what I will make selectable here. "We'll see" whether yet another lookup dict will be needed.
 
-    assert platform in ["", "python", "javascript", "php"]
+    assert_(platform in ["", "python", "javascript", "php"])
 
     template_name = "projects/project_sdk_setup%s.html" % ("_" + platform if platform else "")
 
@@ -501,6 +503,7 @@ def project_messaging_service_edit(request, project_pk, service_pk):
 
     return render(request, 'projects/project_messaging_service_edit.html', {
         'project': project,
+        'service_config': instance,
         'form': form,
         'config_form': config_form,
     })
diff --git a/requirements.txt b/requirements.txt
index f0b2b7d..41c1935 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ jsonschema==4.25.*
 semver==3.0.*
 django-admin-autocomplete-filter==0.7.*
 pygments==2.19.*
-inotify_simple==1.3.*
+inotify_simple==2.0.*
 Brotli==1.1.*
 python-dateutil==2.9.*
 whitenoise==6.9.*
diff --git a/snappea/example_tasks.py b/snappea/example_tasks.py
index d228e09..f3a82a3 100644
--- a/snappea/example_tasks.py
+++ b/snappea/example_tasks.py
@@ -1,7 +1,7 @@
 import time
-import random
 import logging
 
+from bugsink.utils import nc_rnd
 from .decorators import shared_task
 
 # for the example tasks, we pick a non-snappea logger on purpose, to check that non-snappea logs are written in the
@@ -12,7 +12,7 @@ logger = logging.getLogger("bugsink")
 @shared_task
 def random_duration():
     logger.info("Starting something of a random duration")
-    time.sleep(random.random() * 10)
+    time.sleep(nc_rnd.random() * 10)
 
 
 @shared_task
diff --git a/snappea/foreman.py b/snappea/foreman.py
index 6217342..518f95c 100644
--- a/snappea/foreman.py
+++ b/snappea/foreman.py
@@ -14,6 +14,7 @@ import sentry_sdk
 
 from django.conf import settings
 from django.db import connections
+from django.utils._os import safe_join
 
 from sentry_sdk_extensions import capture_or_log_exception
 from performance.context_managers import time_to_logger
@@ -103,6 +104,28 @@ class Foreman:
             logger.info("Startup: Can't run Foreman in TASK_ALWAYS_EAGER mode, EXIT")
             sys.exit(1)
 
+        self.check_pid_file(pid)
+
+        logger.info("Startup: pid is %s", pid)
+        logger.info("Startup: DB-as-MQ location: %s", settings.DATABASES["snappea"]["NAME"])
+        logger.info("Startup: Wake up calls location: %s", self.settings.WAKEUP_CALLS_DIR)
+
+        # Counts the number of "wake up" signals that have not been dealt with yet. The main loop goes to sleep when
+        # this is 0
+        self.signal_semaphore = threading.Semaphore(0)
+
+        # Counts the number of available worker threads. When this is 0, create_workers will first wait until a worker
+        # stops. (the value of this semaphore is implicitly NUM_WORKERS - active_workers)
+        self.worker_semaphore = threading.Semaphore(self.settings.NUM_WORKERS)
+
+    def check_pid_file(self, pid):
+        if self.settings.PID_FILE is None:
+            # this is useful in setups where the lifecycle of the Foreman is _clearly_ the responsibility of some other
+            # thing (e.g. systemd), or the whatever is doing container orchestration. In such cases, the PID file is
+            # only going to get in the way.
+            logger.warning("Startup: no PID_FILE configured, pid-check disabled")
+            return
+
         # if the PID_FILE already exists, read it to see whether snappea is already running.
         # this implementation is not supposed to be bullet-proof for race conditions (nor is it cross-platform)... it's
         # just a small check to prevent the regularly occurring cases:
@@ -126,18 +149,6 @@ class Foreman:
         with open(self.settings.PID_FILE, "w") as f:
             f.write(str(pid))
 
-        logger.info("Startup: pid is %s", pid)
-        logger.info("Startup: DB-as-MQ location: %s", settings.DATABASES["snappea"]["NAME"])
-        logger.info("Startup: Wake up calls location: %s", self.settings.WAKEUP_CALLS_DIR)
-
-        # Counts the number of "wake up" signals that have not been dealt with yet. The main loop goes to sleep when
-        # this is 0
-        self.signal_semaphore = threading.Semaphore(0)
-
-        # Counts the number of available worker threads. When this is 0, create_workers will first wait until a worker
-        # stops. (the value of this semaphore is implicitly NUM_WORKERS - active_workers)
-        self.worker_semaphore = threading.Semaphore(self.settings.NUM_WORKERS)
-
     def connection_close(self, using="default"):
         # (as a method to allow for a single point of documentation)
 
@@ -237,7 +248,7 @@ class Foreman:
         # Ensure that anything we might be waiting for is unblocked. A single notification file and .release call is
         # enough because after every wakeup_calls.read() /  acquire call in our codebase the first thing we do is
         # check_for_stopping(), so the release cannot be inadvertently be "used up" by something else.
-        with open(os.path.join(self.settings.WAKEUP_CALLS_DIR, str(uuid.uuid4())), "w"):
+        with open(safe_join(self.settings.WAKEUP_CALLS_DIR, str(uuid.uuid4())), "w"):
             pass
         self.worker_semaphore.release()
 
@@ -256,7 +267,7 @@ class Foreman:
             raise
 
     def _run_forever(self):
-        pre_existing_wakeup_notifications = glob.glob(os.path.join(self.settings.WAKEUP_CALLS_DIR, "*"))
+        pre_existing_wakeup_notifications = glob.glob(safe_join(self.settings.WAKEUP_CALLS_DIR, "*"))
         if len(pre_existing_wakeup_notifications) > 0:
             # We clear the wakeup_calls_dir on startup. Not strictly necessary because such files would be cleared by in
             # the loop anyway, but it's more efficient to do it first.
@@ -294,7 +305,7 @@ class Foreman:
                 # such that dogfood Bugsink will pick up on it. But in the end it's not really that relevant (despite
                 # being interesting) so I just catch the error.
                 with contextlib.suppress(FileNotFoundError):
-                    os.unlink(os.path.join(self.settings.WAKEUP_CALLS_DIR, event.name))
+                    os.unlink(safe_join(self.settings.WAKEUP_CALLS_DIR, event.name))
 
             self.check_for_stopping()  # check after .read() - it may have unblocked via handle_signal()
             while self.create_workers() == self.settings.TASK_QS_LIMIT:
@@ -416,4 +427,8 @@ class Foreman:
                         "Stopping: %s did not die in %.1fs, proceeding to kill",
                         short_id(task_id), self.settings.GRACEFUL_TIMEOUT)
 
-        os.remove(self.settings.PID_FILE)
+        if self.settings.PID_FILE is not None:
+            logger.info("Stopping: removing PID file %s", self.settings.PID_FILE)
+            os.remove(self.settings.PID_FILE)
+        else:
+            logger.info("Stopping: no PID file to remove")
diff --git a/snappea/models.py b/snappea/models.py
index df1bebd..12bbca3 100644
--- a/snappea/models.py
+++ b/snappea/models.py
@@ -1,6 +1,7 @@
 import os
 
 from django.db import models
+from django.utils._os import safe_join
 
 from .settings import get_settings
 from . import thread_uuid
@@ -44,7 +45,7 @@ class Stat(models.Model):
 
 
 def wakeup_server():
-    wakeup_file = os.path.join(get_settings().WAKEUP_CALLS_DIR, thread_uuid)
+    wakeup_file = safe_join(get_settings().WAKEUP_CALLS_DIR, thread_uuid)
 
     if not os.path.exists(get_settings().WAKEUP_CALLS_DIR):
         os.makedirs(get_settings().WAKEUP_CALLS_DIR, exist_ok=True)
diff --git a/static/js/issue_stacktrace.js b/static/js/issue_stacktrace.js
index 9ee7178..a503803 100644
--- a/static/js/issue_stacktrace.js
+++ b/static/js/issue_stacktrace.js
@@ -3,7 +3,7 @@
 function toggleFoo(element) {
     element.classList.toggle("rotate-180");
 }
-    
+
 function distanceToWindowBottom() {
     // https://stackoverflow.com/a/2800676/339144
     let scrollPosition = window.pageYOffset;
@@ -74,7 +74,7 @@ function expandSection(element) {
   const onTransitioned = function(e) {
     // remove this event listener so it only gets triggered once
     element.removeEventListener('transitionend', onTransitioned);
-    
+
     // remove "height" from the element's inline styles, so it can return to its initial value
     if (element.style.height == explicitlySetValue) {
         element.style.removeProperty("height");
diff --git a/tags/models.py b/tags/models.py
index 37a9754..6f9b655 100644
--- a/tags/models.py
+++ b/tags/models.py
@@ -162,6 +162,11 @@ def digest_tags(event_data, event, issue):
     tags = {
         k: str(v)[:200] for k, v in deduce_tags(event_data).items()
     }
+
+    for key in "user.ip_address", "user":
+        if tags.get(key) == "{{auto}}":
+            tags[key] = event.remote_addr
+
     store_tags(event, issue, tags)
 
 
diff --git a/tags/tests.py b/tags/tests.py
index 318f1af..d6d853d 100644
--- a/tags/tests.py
+++ b/tags/tests.py
@@ -7,7 +7,7 @@ from issues.factories import get_or_create_issue, denormalized_issue_fields
 from events.factories import create_event, create_event_data
 from issues.models import Issue
 
-from .models import store_tags, EventTag, IssueTag, TagValue
+from .models import store_tags, EventTag, IssueTag, TagValue, digest_tags
 from .utils import deduce_tags
 from .search import search_events, search_issues, parse_query, search_events_optimized
 from .tasks import vacuum_eventless_issuetags
@@ -139,6 +139,24 @@ class StoreTagsTestCase(DjangoTestCase):
         self.assertEqual(IssueTag.objects.filter(issue=self.issue).count(), 512)
 
 
+class DigestTagsTestCase(DjangoTestCase):
+    def test_auto_ip_address(self):
+        project = Project.objects.create(name="Test Project")
+        issue, _ = get_or_create_issue(project)
+        event = create_event(project, issue=issue)
+
+        event_data = {
+            "user": {
+                "ip_address": "{{auto}}",
+            },
+        }
+        event.remote_addr = "123.123.123.123"
+        event.save()
+        digest_tags(event_data, event, issue)
+
+        self.assertEqual(["123.123.123.123", "123.123.123.123"], [e.value.value for e in event.get_tags])
+
+
 class SearchParserTestCase(RegularTestCase):
 
     def test_parser(self):
diff --git a/teams/forms.py b/teams/forms.py
index 3bcf3ec..dbf0bd3 100644
--- a/teams/forms.py
+++ b/teams/forms.py
@@ -1,16 +1,18 @@
 from django import forms
 from django.contrib.auth import get_user_model
 from django.template.defaultfilters import yesno
+from django.utils.translation import gettext_lazy as _
 
+from bugsink.utils import assert_
 from .models import TeamRole, TeamMembership, Team
 
 User = get_user_model()
 
 
 class TeamMemberInviteForm(forms.Form):
-    email = forms.EmailField(label='Email', required=True)
+    email = forms.EmailField(label=_('Email'), required=True)
     role = forms.ChoiceField(
-        label='Role', choices=TeamRole.choices, required=True, initial=TeamRole.MEMBER, widget=forms.RadioSelect)
+        label=_('Role'), choices=TeamRole.choices, required=True, initial=TeamRole.MEMBER, widget=forms.RadioSelect)
 
     def __init__(self, user_must_exist, *args, **kwargs):
         super().__init__(*args, **kwargs)
@@ -36,14 +38,17 @@ class MyTeamMembershipForm(forms.ModelForm):
 
     def __init__(self, *args, **kwargs):
         edit_role = kwargs.pop("edit_role")
+
         super().__init__(*args, **kwargs)
-        assert self.instance is not None, "This form is only implemented for editing"
+        assert_(self.instance is not None, "This form is only implemented for editing")
 
         if not edit_role:
             del self.fields['role']
 
         global_send_email_alerts = self.instance.user.send_email_alerts
-        empty_label = "User-default (%s)" % yesno(global_send_email_alerts).capitalize()
+        global_send_email_alerts_text = yesno(global_send_email_alerts).capitalize()
+
+        empty_label = _("User-default (%s)") % global_send_email_alerts_text
         self.fields['send_email_alerts'].empty_label = empty_label
         self.fields['send_email_alerts'].widget.choices[0] = ("unknown", empty_label)
 
diff --git a/teams/models.py b/teams/models.py
index c4a670b..5cc41ec 100644
--- a/teams/models.py
+++ b/teams/models.py
@@ -3,34 +3,36 @@ import uuid
 from django.db import models
 
 from django.conf import settings
+from django.utils.translation import gettext_lazy as _, pgettext_lazy
 
 
 class TeamRole(models.IntegerChoices):
-    MEMBER = 0
-    ADMIN = 1
+    MEMBER = 0, _("Member")
+    ADMIN = 1, _("Admin")
 
 
 class TeamVisibility(models.IntegerChoices):
     # PUBLIC = 0  # anyone can see the team and its members  not sure if I want this or always want to require click-in
-    JOINABLE = 1  # anyone can join
+    JOINABLE = 1, _("Joinable")  # anyone can join
 
     # the team's existance is visible in lists, but there is no "Join" button. the idea would be that you can "request
     # to join" (which is currently not implemented as a button, but you could do it 'out of bands' i.e. via email or
     # chat).
-    DISCOVERABLE = 10
+    DISCOVERABLE = 10, _("Discoverable")
 
     # the team is not visible to non-members; you need to be invited
-    HIDDEN = 99
+    HIDDEN = 99, _("Hidden")
 
 
 class Team(models.Model):
     id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
 
-    name = models.CharField(max_length=255, blank=False, null=False, unique=True)
+    name = models.CharField(pgettext_lazy("Team", "Name"), max_length=255, blank=False, null=False, unique=True)
 
     visibility = models.IntegerField(
+        _("Visibility"),
         choices=TeamVisibility.choices, default=TeamVisibility.DISCOVERABLE,
-        help_text="Which users can see this team and its issues?")
+        help_text=_("Which users can see this team and its issues?"))
 
     def __str__(self):
         return self.name
@@ -48,8 +50,8 @@ class TeamMembership(models.Model):
     team = models.ForeignKey(Team, on_delete=models.CASCADE)
     user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
 
-    send_email_alerts = models.BooleanField(default=None, null=True, blank=True)
-    role = models.IntegerField(choices=TeamRole.choices, default=TeamRole.MEMBER)
+    send_email_alerts = models.BooleanField(_("Send email alerts"), default=None, null=True, blank=True)
+    role = models.IntegerField(_("Role"), choices=TeamRole.choices, default=TeamRole.MEMBER)
     accepted = models.BooleanField(default=False)
 
     def __str__(self):
diff --git a/teams/templates/mails/team_membership_invite.html b/teams/templates/mails/team_membership_invite.html
index 75e9beb..d19041b 100644
--- a/teams/templates/mails/team_membership_invite.html
+++ b/teams/templates/mails/team_membership_invite.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/teams/templates/mails/team_membership_invite_new_user.html b/teams/templates/mails/team_membership_invite_new_user.html
index 005d93e..6fd8978 100644
--- a/teams/templates/mails/team_membership_invite_new_user.html
+++ b/teams/templates/mails/team_membership_invite_new_user.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/teams/templates/teams/team_edit.html b/teams/templates/teams/team_edit.html
index 4a8037f..c3d33eb 100644
--- a/teams/templates/teams/team_edit.html
+++ b/teams/templates/teams/team_edit.html
@@ -1,8 +1,9 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
-{% block title %}Edit {{ team.name }} · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Edit" %} {{ team.name }} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -14,18 +15,20 @@
         {% csrf_token %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">Settings ({{ team.name }})</h1>
+            <h1 class="text-4xl my-4 font-bold">{% blocktranslate with team_name=team.name %}Settings ({{ team_name }}){% endblocktranslate %}</h1>
         </div>
 
         <div class="mt-4 mb-4">
-            Team settings for "{{ team.name }}".
+            {% blocktranslate with team_name=team.name %}Team settings for "{{ team_name }}".{% endblocktranslate %}
         </div>
 
         {% tailwind_formfield form.name %}
         {% tailwind_formfield form.visibility %}
 
-        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
-        <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a>
+        <div class="flex items-center mt-4">
+            <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
+            <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a>
+        </div>
         </form>
 
     </div>
diff --git a/teams/templates/teams/team_list.html b/teams/templates/teams/team_list.html
index ae09aa4..367a0ce 100644
--- a/teams/templates/teams/team_list.html
+++ b/teams/templates/teams/team_list.html
@@ -1,7 +1,8 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
-{% block title %}Teams · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Teams" %} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -10,14 +11,14 @@
 <div class="m-4 flex flex-row items-end">
 
     <div><!-- top, LHS (h1) -->
-        <h1 class="text-4xl mt-4 font-bold">Teams</h1>
+        <h1 class="text-4xl mt-4 font-bold">{% translate "Teams" %}</h1>
     </div>
 
     {# align to bottom #}
     <div class="ml-auto"><!-- top, RHS (buttons) -->
         {% if can_create %}
         <div>
-            <a class="block font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url 'team_new' %}">New Team</a>
+            <a class="block font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url 'team_new' %}">{% translate "New Team" %}</a>
         </div>
         {% endif %}
     </div> {# top, RHS (buttons) #}
@@ -28,8 +29,8 @@
 
 <div class="flex bg-slate-50 dark:bg-slate-800 mt-4 items-end">
     <div class="flex">
-    <a href="{% url "team_list_mine" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "mine" %}text-cyan-500 dark:text-cyan-400 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400 dark:hover:border-slate-500{% endif %}">My Teams</div></a>
-    <a href="{% url "team_list_other" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "other" %}text-cyan-500 dark:text-cyan-400 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400 dark:hover:border-slate-500{% endif %}">Other Teams</div></a>
+    <a href="{% url "team_list_mine" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "mine" %}text-cyan-500 dark:text-cyan-400 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400 dark:hover:border-slate-500{% endif %}">{% translate "My Teams" %}</div></a>
+    <a href="{% url "team_list_other" %}"><div class="p-4 font-bold text-xl hover:bg-slate-200 dark:hover:bg-slate-800 {% if ownership_filter == "other" %}text-cyan-500 dark:text-cyan-400 border-cyan-500 border-b-4 {% else %}text-slate-500 dark:text-slate-300 hover:border-b-4 hover:border-slate-400 dark:hover:border-slate-500{% endif %}">{% translate "Other Teams" %}</div></a>
     </div>
     {% comment %}
     <div class="ml-auto p-2">
@@ -52,10 +53,10 @@
                     {{ team.name }}
                 </div>
                 <div>
-                    {{ team.project_count }} projects
-                    | {{ team.member_count }} members
+                    {{ team.project_count }} {% translate "projects" %}
+                    | {{ team.member_count }} {% translate "members" %}
                     {% if team.member %}
-                    | <a href="{% url 'team_member_settings' team_pk=team.id user_pk=request.user.id %}" class="font-bold text-cyan-500 dark:text-cyan-400">my settings</a>
+                    | <a href="{% url 'team_member_settings' team_pk=team.id user_pk=request.user.id %}" class="font-bold text-cyan-500 dark:text-cyan-400">{% translate "my settings" %}</a>
                     {% endif %}
                 </div>
             </td>
@@ -65,7 +66,7 @@
                     {% if not team.member.accepted %}
                     <span class="bg-slate-100 dark:bg-slate-700 rounded-2xl px-4 py-2 ml-2 text-sm">You're&nbsp;invited!</span>
                     {% elif team.member.is_admin %} {# NOTE: we intentionally hide admin-ness for non-accepted users #}
-                    <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">Admin</span>
+                    <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm whitespace-nowrap">{% translate "Admin" %}</span>
                     {% endif %}
                 {% endif %}
             </td>
@@ -100,17 +101,17 @@
                 {% if team.member %}
                     {% if not team.member.accepted %}
                         <div>
-                            <a href="{% url 'team_members_accept' team_pk=team.id %}" class="font-bold text-cyan-500 dark:text-cyan-400">Invitation</a>
+                            <a href="{% url 'team_members_accept' team_pk=team.id %}" class="font-bold text-cyan-500 dark:text-cyan-400 whitespace-nowrap">{% translate "Invitation" %}</a>
                         </div>
                     {% else %}
                         <div>
-                            <button name="action" value="leave:{{ team.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Leave</button>
+                            <button name="action" value="leave:{{ team.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Leave" %}</button>
                         </div>
                     {% endif %}
                 {% else %}
                     {% if team.is_joinable or request.user.is_superuser %}
                         <div>
-                            <button name="action" value="join:{{ team.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Join</button>
+                            <button name="action" value="join:{{ team.id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Join" %}</button>
                         </div>
                     {% endif %}
                 {% endif %}
@@ -120,7 +121,7 @@
             {% empty %}
             <tr class="bg-white dark:bg-slate-900 border-slate-200 dark:border-slate-700 border-b-2">
             <td class="w-full p-4">
-                No teams found.
+                {% translate "No teams found." %}
             </td>
 
             </tr>
diff --git a/teams/templates/teams/team_member_settings.html b/teams/templates/teams/team_member_settings.html
index dd4a187..4e3130f 100644
--- a/teams/templates/teams/team_member_settings.html
+++ b/teams/templates/teams/team_member_settings.html
@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}Member settings · {{ team.name }}  · {{ site_title }}{% endblock %}
 
@@ -23,25 +24,25 @@
         {% endif %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">Membership settings</h1>
+            <h1 class="text-4xl my-4 font-bold">{% trans "Membership settings" %}</h1>
         </div>
 
         <div class="mt-4 mb-4">
             {% if this_is_you %}
-                Your membership settings for team "{{ team.name }}".
+                {% blocktrans with team_name=team.name %}Your membership settings for team "{{ team_name }}".{% endblocktrans %}
             {% else %}
-                Settings for team "{{ team.name }}" and user {{ user.username }}.
+                {% blocktrans with team_name=team.name username=user.username %}Settings for team "{{ team_name }}" and user {{ username }}.{% endblocktrans %}
             {% endif %}
         </div>
 
         {% tailwind_formfield form.role %}
         {% tailwind_formfield form.send_email_alerts %}
 
-        <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
+        <button class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
         {% if this_is_you %}
-            <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a> {# not quite perfect, because "you" can also click on yourself in the member list #}
+            <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a> {# not quite perfect, because "you" can also click on yourself in the member list #}
         {% else %}
-            <a href="{% url "team_members" team_pk=team.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a>
+            <a href="{% url "team_members" team_pk=team.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a>
         {% endif %}
         </form>
 
diff --git a/teams/templates/teams/team_members.html b/teams/templates/teams/team_members.html
index ac69725..3369d0b 100644
--- a/teams/templates/teams/team_members.html
+++ b/teams/templates/teams/team_members.html
@@ -1,7 +1,8 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
-{% block title %}Members · {{ team.name }}  · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Members" %} · {{ team.name }}  · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -21,10 +22,10 @@
         {% endif %}
 
         <div class="flex">
-            <h1 class="text-4xl mt-4 font-bold">Team Members</h1>
+            <h1 class="text-4xl mt-4 font-bold">{% translate "Team Members" %}</h1>
 
             <div class="ml-auto mt-6">
-                <a class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url "team_members_invite" team_pk=team.pk %}">Invite Member</a>
+                <a class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 ml-1 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md" href="{% url "team_members_invite" team_pk=team.pk %}">{% translate "Invite Member" %}</a>
             </div>
         </div>
 
@@ -45,9 +46,9 @@
                     <div>
                         <a href="{% url "team_member_settings" team_pk=team.pk user_pk=member.user_id %}" class="text-xl text-cyan-500 dark:text-cyan-300 font-bold">{{ member.user.email }}</a>  {# "best name" perhaps later? #}
                         {% if not member.accepted %}
-                        <span class="bg-slate-100 dark:bg-slate-700 rounded-2xl px-4 py-2 ml-2 text-sm">Invitation pending</span>
+                        <span class="bg-slate-100 dark:bg-slate-700 rounded-2xl px-4 py-2 ml-2 text-sm">{% translate "Invitation pending" %}</span>
                         {% elif member.is_admin %} {# NOTE: we intentionally hide admin-ness for non-accepted users #}
-                        <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">Admin</span>
+                        <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">{% translate "Admin" %}</span>
                         {% endif %}
                     </div>
                 </td>
@@ -55,12 +56,12 @@
                 <td class="p-4">
                     <div class="flex justify-end">
                         {% if not member.accepted %}
-                            <button name="action" value="reinvite:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Reinvite</button>
+                            <button name="action" value="reinvite:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Reinvite" %}</button>
                         {% endif %}
                         {% if request.user == member.user %}
-                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Leave</button>
+                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Leave" %}</button>
                         {% else %}  {# NOTE: in our setup request_user_is_admin is implied because only admins may view the membership page #}
-                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Remove</button>
+                            <button name="action" value="remove:{{ member.user_id }}" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md whitespace-nowrap">{% translate "Remove" %}</button>
                         {% endif %}
                     </div>
                 </td>
@@ -71,7 +72,7 @@
                 <td class="w-full p-4">
                     <div>
                         {# Note: this is already somewhat exceptional, because the usually you'll at least see yourself here (unless you're a superuser and a team has become memberless) #}
-                        No members yet. <a href="{% url "team_members_invite" team_pk=team.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">Invite someone</a>.
+                        {% translate "No members yet." %} <a href="{% url "team_members_invite" team_pk=team.pk %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Invite someone</a>." %}
                     </div>
                 </td>
                 </tr>
@@ -85,7 +86,7 @@
 
     <div class="flex flex-direction-row">
         <div class="ml-auto py-8 pr-4">
-            <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold">Back to Teams</a>
+            <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold">{% translate "Back to Teams" %}</a>
         </div>
     </div>
 </div>
diff --git a/teams/templates/teams/team_members_invite.html b/teams/templates/teams/team_members_invite.html
index c72bbb7..29dd910 100644
--- a/teams/templates/teams/team_members_invite.html
+++ b/teams/templates/teams/team_members_invite.html
@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}Invite Members · {{ team.name }}  · {{ site_title }}{% endblock %}
 
@@ -24,11 +25,11 @@
         {% endif %}
 
         <div>
-            <h1 class="text-4xl mt-4 font-bold">Invite members ({{ team.name }})</h1>
+            <h1 class="text-4xl mt-4 font-bold">{% blocktranslate with team_name=team.name %}Invite members ({{ team_name }}){% endblocktranslate %}</h1>
         </div>
 
         <div class="mt-4 mb-4">
-            Invite a member to join the team "{{ team.name }}". They will receive an email with a link to join.
+            {% blocktranslate with team_name=team.name %}Invite a member to join the team "{{ team_name }}". They will receive an email with a link to join.{% endblocktranslate %}
         </div>
 
         {% tailwind_formfield_implicit form.email %}
@@ -48,9 +49,9 @@
             {% endif %}
         </div>
 
-        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Invite Member</button>
-        <button name="action" value="invite_and_add_another" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">Invite and add another</button>
-        <a href="{% url "team_members" team_pk=team.pk %}" class="font-bold text-slate-500 dark:text-slate-300 ml-4">Cancel</a>
+        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Invite Member" %}</button>
+        <button name="action" value="invite_and_add_another" class="font-bold text-slate-500 dark:text-slate-300 border-slate-300 dark:border-slate-600 pl-4 pr-4 pb-2 pt-2 ml-2 border-2 hover:bg-slate-200 dark:hover:bg-slate-800 active:ring rounded-md">{% translate "Invite and add another" %}</button>
+        <a href="{% url "team_members" team_pk=team.pk %}" class="font-bold text-slate-500 dark:text-slate-300 ml-4">{% translate "Cancel" %}</a>
 
         </form>
 
diff --git a/teams/templates/teams/team_new.html b/teams/templates/teams/team_new.html
index 3be81cc..2d9122a 100644
--- a/teams/templates/teams/team_new.html
+++ b/teams/templates/teams/team_new.html
@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}New team  · {{ site_title }}{% endblock %}
 
@@ -14,14 +15,14 @@
         {% csrf_token %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">New Team</h1>
+            <h1 class="text-4xl my-4 font-bold">{% translate "New Team" %}</h1>
         </div>
 
         {% tailwind_formfield form.name %}
         {% tailwind_formfield form.visibility %}
 
-        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
-        <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a>
+        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
+        <a href="{% url "team_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a>
 
         </form>
 
diff --git a/teams/views.py b/teams/views.py
index 19e5d4a..6a39141 100644
--- a/teams/views.py
+++ b/teams/views.py
@@ -9,6 +9,7 @@ from django.utils import timezone
 from django.urls import reverse
 from django.contrib import messages
 from django.contrib.auth import logout
+from django.utils.translation import gettext_lazy as _
 
 from users.models import EmailVerification
 from bugsink.app_settings import get_settings, CB_ANYBODY, CB_ADMINS, CB_MEMBERS
@@ -54,7 +55,7 @@ def team_list(request, ownership_filter=None):
             if not team.is_joinable() and not request.user.is_superuser:
                 raise PermissionDenied("This team is not joinable")
 
-            messages.success(request, 'You have joined the team "%s"' % team.name)
+            messages.success(request, _('You have joined the team "%s"') % team.name)
             TeamMembership.objects.create(team_id=team_pk, user_id=request.user.id, role=TeamRole.MEMBER, accepted=True)
             return redirect('team_member_settings', team_pk=team_pk, user_pk=request.user.id)
 
@@ -126,7 +127,8 @@ def team_edit(request, team_pk):
 
         if action == 'delete':
             # Double-check that the user is an admin or superuser
-            if not (TeamMembership.objects.filter(team=team, user=request.user, role=TeamRole.ADMIN, accepted=True).exists() or
+            if not (TeamMembership.objects.filter(
+                        team=team, user=request.user, role=TeamRole.ADMIN, accepted=True).exists() or
                     request.user.is_superuser):
                 raise PermissionDenied("Only team admins can delete teams")
 
diff --git a/templates/bugsink/login.html b/templates/bugsink/login.html
index c31a4e0..d515fc6 100644
--- a/templates/bugsink/login.html
+++ b/templates/bugsink/login.html
@@ -1,5 +1,6 @@
 {% extends "barest_base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Log in · {{ site_title }}{% endblock %}
 
@@ -14,13 +15,13 @@
         <div class="p-12 md:pt-24 md:pl-24 md:pr-24 md:pb-16">
 
             {% if form.errors %}
-            <div class="mb-8 text-red-500 dark:text-red-400">Your username and password didn't match. Please try again.</div>
+            <div class="mb-8 text-red-500 dark:text-red-400">{% translate "Your username and password didn't match. Please try again." %}</div>
 
             {% elif next %}
                 {% if user.is_authenticated %}
-                <div class="mb-8">Your account doesn't have access to this page. To proceed, please login with an account that has access.</div>
+                <div class="mb-8">{% translate "Your account doesn't have access to this page. To proceed, please login with an account that has access." %}</div>
                 {% else %}
-                <div class="mb-8">Please login to see this page.</div>
+                <div class="mb-8">{% translate "Please login to see this page." %}</div>
                 {% endif %}
             {% endif %}
 
@@ -30,22 +31,22 @@
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" class="absolute ml-3" width="24">
                         <path fill-rule="evenodd" d="M7.5 6a4.5 4.5 0 1 1 9 0 4.5 4.5 0 0 1-9 0ZM3.751 20.105a8.25 8.25 0 0 1 16.498 0 .75.75 0 0 1-.437.695A18.683 18.683 0 0 1 12 22.5c-2.786 0-5.433-.608-7.812-1.7a.75.75 0 0 1-.437-.695Z" clip-rule="evenodd" />
                     </svg>
-                    <input name="username" type="text" class="bg-slate-200 dark:bg-slate-800 pl-12 py-2 md:py-4 focus:outline-none w-full" {% if form.username.value %}value="{{ form.username.value }}"{% endif %}  placeholder="Username" />
+                    <input name="username" type="text" class="bg-slate-200 dark:bg-slate-800 pl-12 py-2 md:py-4 focus:outline-none w-full" {% if form.username.value %}value="{{ form.username.value }}"{% endif %}  placeholder="{% translate 'Username' %}" />
                 </div>
                 <div class="flex items-center text-lg mb-6 md:mb-8">
                     <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor" class="absolute ml-3" width="24">
                         <path fill-rule="evenodd" d="M12 1.5a5.25 5.25 0 0 0-5.25 5.25v3a3 3 0 0 0-3 3v6.75a3 3 0 0 0 3 3h10.5a3 3 0 0 0 3-3v-6.75a3 3 0 0 0-3-3v-3c0-2.9-2.35-5.25-5.25-5.25Zm3.75 8.25v-3a3.75 3.75 0 1 0-7.5 0v3h7.5Z" clip-rule="evenodd" />
                     </svg>
-                    <input name="password" type="password"  class="bg-slate-200 dark:bg-slate-800 pl-12 py-2 md:py-4 focus:outline-none w-full" {% if form.password.value %}value="{{ form.password.value }}"{% endif %} placeholder="Password" />
+                    <input name="password" type="password"  class="bg-slate-200 dark:bg-slate-800 pl-12 py-2 md:py-4 focus:outline-none w-full" {% if form.password.value %}value="{{ form.password.value }}"{% endif %} placeholder="{% translate 'Password' %}" />
                 </div>
                 <input type="hidden" name="next" value="{{ next }}">
-                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">Login</button>
+                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">{% translate "Login" %}</button>
 
             </form>
 
             <div class="mt-4">
-                <a href="{% url 'request_reset_password' %}" class="text-slate-800 dark:text-slate-100">Forgot password?</a>
-                {% if registration_enabled %}<a href="{% url 'signup' %}" class="float-right text-slate-800 dark:text-slate-100">Create an account</a>{% endif %}
+                <a href="{% url 'request_reset_password' %}" class="text-slate-800 dark:text-slate-100">{% translate "Forgot password?" %}</a>
+                {% if registration_enabled %}<a href="{% url 'signup' %}" class="float-right text-slate-800 dark:text-slate-100">{% translate "Create an account" %}</a>{% endif %}
             </div>
         </div>
 
diff --git a/templates/bugsink/settings.html b/templates/bugsink/settings.html
index ecfba1d..29ed353 100644
--- a/templates/bugsink/settings.html
+++ b/templates/bugsink/settings.html
@@ -2,15 +2,16 @@
 {% load static %}
 {% load tailwind_forms %}
 {% load stricter_templates %}
+{% load i18n %}
 
-{% block title %}Settings  · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Settings" %}  · {{ site_title }}{% endblock %}
 
 {% block content %}
 
 <div class="m-4">
 
     <div>
-        <h1 class="text-4xl my-4 font-bold">Site Settings</h1>
+        <h1 class="text-4xl my-4 font-bold">{% translate "Site Settings" %}</h1>
     </div>
 
     <h1 class="text-2xl font-bold mt-4">Bugsink</h1>
diff --git a/theme/static/css/dist/styles.css b/theme/static/css/dist/styles.css
index 16ef526..d55770c 100644
--- a/theme/static/css/dist/styles.css
+++ b/theme/static/css/dist/styles.css
@@ -1 +1 @@
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.special{color:#000;background-color:#ffffc0;padding-left:5px;padding-right:5px}[data-theme=dark] .syntax-coloring .hll{background-color:#49483e}[data-theme=dark] .syntax-coloring{background:#272822;color:#f8f8f2}[data-theme=dark] .syntax-coloring .c{color:#959077}[data-theme=dark] .syntax-coloring .err{color:#ed007e;background-color:#1e0010}[data-theme=dark] .syntax-coloring .esc,[data-theme=dark] .syntax-coloring .g{color:#f8f8f2}[data-theme=dark] .syntax-coloring .k{color:#66d9ef}[data-theme=dark] .syntax-coloring .l{color:#ae81ff}[data-theme=dark] .syntax-coloring .n{color:#f8f8f2}[data-theme=dark] .syntax-coloring .o{color:#ff4689}[data-theme=dark] .syntax-coloring .p,[data-theme=dark] .syntax-coloring .x{color:#f8f8f2}[data-theme=dark] .syntax-coloring .c1,[data-theme=dark] .syntax-coloring .ch,[data-theme=dark] .syntax-coloring .cm,[data-theme=dark] .syntax-coloring .cp,[data-theme=dark] .syntax-coloring .cpf,[data-theme=dark] .syntax-coloring .cs{color:#959077}[data-theme=dark] .syntax-coloring .gd{color:#ff4689}[data-theme=dark] .syntax-coloring .ge{color:#f8f8f2;font-style:italic}[data-theme=dark] .syntax-coloring .ges{color:#f8f8f2;font-weight:700;font-style:italic}[data-theme=dark] .syntax-coloring .gh,[data-theme=dark] .syntax-coloring .gr{color:#f8f8f2}[data-theme=dark] .syntax-coloring .gi{color:#a6e22e}[data-theme=dark] .syntax-coloring .go{color:#66d9ef}[data-theme=dark] .syntax-coloring .gp{color:#ff4689;font-weight:700}[data-theme=dark] .syntax-coloring .gs{color:#f8f8f2;font-weight:700}[data-theme=dark] .syntax-coloring .gu{color:#959077}[data-theme=dark] .syntax-coloring .gt{color:#f8f8f2}[data-theme=dark] .syntax-coloring .kc,[data-theme=dark] .syntax-coloring .kd{color:#66d9ef}[data-theme=dark] .syntax-coloring .kn{color:#ff4689}[data-theme=dark] .syntax-coloring .kp,[data-theme=dark] .syntax-coloring .kr,[data-theme=dark] .syntax-coloring .kt{color:#66d9ef}[data-theme=dark] .syntax-coloring .ld{color:#e6db74}[data-theme=dark] .syntax-coloring .m{color:#ae81ff}[data-theme=dark] .syntax-coloring .s{color:#e6db74}[data-theme=dark] .syntax-coloring .na{color:#a6e22e}[data-theme=dark] .syntax-coloring .nb{color:#f8f8f2}[data-theme=dark] .syntax-coloring .nc{color:#a6e22e}[data-theme=dark] .syntax-coloring .no{color:#66d9ef}[data-theme=dark] .syntax-coloring .nd{color:#a6e22e}[data-theme=dark] .syntax-coloring .ni{color:#f8f8f2}[data-theme=dark] .syntax-coloring .ne,[data-theme=dark] .syntax-coloring .nf{color:#a6e22e}[data-theme=dark] .syntax-coloring .nl,[data-theme=dark] .syntax-coloring .nn{color:#f8f8f2}[data-theme=dark] .syntax-coloring .nx{color:#a6e22e}[data-theme=dark] .syntax-coloring .py{color:#f8f8f2}[data-theme=dark] .syntax-coloring .nt{color:#ff4689}[data-theme=dark] .syntax-coloring .nv{color:#f8f8f2}[data-theme=dark] .syntax-coloring .ow{color:#ff4689}[data-theme=dark] .syntax-coloring .pm,[data-theme=dark] .syntax-coloring .w{color:#f8f8f2}[data-theme=dark] .syntax-coloring .mb,[data-theme=dark] .syntax-coloring .mf,[data-theme=dark] .syntax-coloring .mh,[data-theme=dark] .syntax-coloring .mi,[data-theme=dark] .syntax-coloring .mo{color:#ae81ff}[data-theme=dark] .syntax-coloring .dl,[data-theme=dark] .syntax-coloring .s2,[data-theme=dark] .syntax-coloring .sa,[data-theme=dark] .syntax-coloring .sb,[data-theme=dark] .syntax-coloring .sc,[data-theme=dark] .syntax-coloring .sd{color:#e6db74}[data-theme=dark] .syntax-coloring .se{color:#ae81ff}[data-theme=dark] .syntax-coloring .s1,[data-theme=dark] .syntax-coloring .sh,[data-theme=dark] .syntax-coloring .si,[data-theme=dark] .syntax-coloring .sr,[data-theme=dark] .syntax-coloring .ss,[data-theme=dark] .syntax-coloring .sx{color:#e6db74}[data-theme=dark] .syntax-coloring .bp{color:#f8f8f2}[data-theme=dark] .syntax-coloring .fm{color:#a6e22e}[data-theme=dark] .syntax-coloring .vc,[data-theme=dark] .syntax-coloring .vg,[data-theme=dark] .syntax-coloring .vi,[data-theme=dark] .syntax-coloring .vm{color:#f8f8f2}[data-theme=dark] .syntax-coloring .il{color:#ae81ff}input[type=radio]{color:#06b6d4}.hover\:border-b-4:hover{border-bottom-width:4px}.hover\:border-slate-400:hover{--tw-border-opacity:1;border-color:rgb(148 163 184/var(--tw-border-opacity,1))}.hover\:bg-cyan-400:hover{--tw-bg-opacity:1;background-color:rgb(34 211 238/var(--tw-bg-opacity,1))}.hover\:bg-red-50:hover{--tw-bg-opacity:1;background-color:rgb(254 242 242/var(--tw-bg-opacity,1))}.hover\:bg-red-600:hover{--tw-bg-opacity:1;background-color:rgb(220 38 38/var(--tw-bg-opacity,1))}.hover\:bg-slate-100:hover{--tw-bg-opacity:1;background-color:rgb(241 245 249/var(--tw-bg-opacity,1))}.hover\:bg-slate-200:hover{--tw-bg-opacity:1;background-color:rgb(226 232 240/var(--tw-bg-opacity,1))}.hover\:bg-slate-300:hover{--tw-bg-opacity:1;background-color:rgb(203 213 225/var(--tw-bg-opacity,1))}.focus\:border-cyan-500:focus{--tw-border-opacity:1;border-color:rgb(6 182 212/var(--tw-border-opacity,1))}.focus\:outline-none:focus{outline:2px solid transparent;outline-offset:2px}.focus\:ring-cyan-200:focus{--tw-ring-opacity:1;--tw-ring-color:rgb(165 243 252/var(--tw-ring-opacity,1))}.active\:ring:active{--tw-ring-offset-shadow:var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);--tw-ring-shadow:var(--tw-ring-inset) 0 0 0 calc(3px + var(--tw-ring-offset-width)) var(--tw-ring-color);box-shadow:var(--tw-ring-offset-shadow),var(--tw-ring-shadow),var(--tw-shadow,0 0 #0000)}@media (min-width:768px){.md\:mb-8{margin-bottom:2rem}.md\:h-16{height:4rem}.md\:w-16{width:4rem}.md\:p-4{padding:1rem}.md\:p-8{padding:2rem}.md\:py-4{padding-top:1rem;padding-bottom:1rem}.md\:pb-16{padding-bottom:4rem}.md\:pl-24{padding-left:6rem}.md\:pr-24{padding-right:6rem}.md\:pt-24{padding-top:6rem}}@media (min-width:1024px){.lg\:w-5\/12{width:41.666667%}.lg\:flex-row{flex-direction:row}.lg\:flex-row-reverse{flex-direction:row-reverse}.lg\:pb-0{padding-bottom:0}}@media (min-width:1280px){.xl\:flex{display:flex}}@media (min-width:1920px){.\33xl\:flex-row{flex-direction:row}.\33xl\:pt-0{padding-top:0}}.dark\:block:where([data-theme=dark],[data-theme=dark] *){display:block}.dark\:hidden:where([data-theme=dark],[data-theme=dark] *){display:none}.dark\:border-amber-900:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(120 53 15/var(--tw-border-opacity,1))}.dark\:border-cyan-400:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(34 211 238/var(--tw-border-opacity,1))}.dark\:border-red-400:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(248 113 113/var(--tw-border-opacity,1))}.dark\:border-red-700:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(185 28 28/var(--tw-border-opacity,1))}.dark\:border-slate-400:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(148 163 184/var(--tw-border-opacity,1))}.dark\:border-slate-600:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(71 85 105/var(--tw-border-opacity,1))}.dark\:border-slate-700:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(51 65 85/var(--tw-border-opacity,1))}.dark\:border-slate-900:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(15 23 42/var(--tw-border-opacity,1))}.dark\:border-yellow-700:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(161 98 7/var(--tw-border-opacity,1))}.dark\:bg-amber-800:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(146 64 14/var(--tw-bg-opacity,1))}.dark\:bg-cyan-700:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(14 116 144/var(--tw-bg-opacity,1))}.dark\:bg-cyan-900:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(22 78 99/var(--tw-bg-opacity,1))}.dark\:bg-red-700:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(185 28 28/var(--tw-bg-opacity,1))}.dark\:bg-red-900:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(127 29 29/var(--tw-bg-opacity,1))}.dark\:bg-slate-700:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(51 65 85/var(--tw-bg-opacity,1))}.dark\:bg-slate-800:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(30 41 59/var(--tw-bg-opacity,1))}.dark\:bg-slate-900:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(15 23 42/var(--tw-bg-opacity,1))}.dark\:bg-opacity-50:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:0.5}.dark\:from-slate-950:where([data-theme=dark],[data-theme=dark] *){--tw-gradient-from:#020617 var(--tw-gradient-from-position);--tw-gradient-to:rgba(2,6,23,0) var(--tw-gradient-to-position);--tw-gradient-stops:var(--tw-gradient-from),var(--tw-gradient-to)}.dark\:fill-slate-100:where([data-theme=dark],[data-theme=dark] *){fill:#f1f5f9}.dark\:fill-slate-500:where([data-theme=dark],[data-theme=dark] *){fill:#64748b}.dark\:fill-slate-600:where([data-theme=dark],[data-theme=dark] *){fill:#475569}.dark\:stroke-slate-600:where([data-theme=dark],[data-theme=dark] *){stroke:#475569}.dark\:text-cyan-300:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(103 232 249/var(--tw-text-opacity,1))}.dark\:text-cyan-400:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(34 211 238/var(--tw-text-opacity,1))}.dark\:text-gray-400:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(156 163 175/var(--tw-text-opacity,1))}.dark\:text-red-200:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(254 202 202/var(--tw-text-opacity,1))}.dark\:text-red-300:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(252 165 165/var(--tw-text-opacity,1))}.dark\:text-red-400:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(248 113 113/var(--tw-text-opacity,1))}.dark\:text-slate-100:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(241 245 249/var(--tw-text-opacity,1))}.dark\:text-slate-300:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(203 213 225/var(--tw-text-opacity,1))}.dark\:text-slate-600:where([data-theme=dark],[data-theme=dark] *){--tw-text-opacity:1;color:rgb(71 85 105/var(--tw-text-opacity,1))}.dark\:hover\:border-slate-500:hover:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(100 116 139/var(--tw-border-opacity,1))}.dark\:hover\:bg-cyan-600:hover:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(8 145 178/var(--tw-bg-opacity,1))}.dark\:hover\:bg-red-800:hover:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(153 27 27/var(--tw-bg-opacity,1))}.dark\:hover\:bg-slate-700:hover:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(51 65 85/var(--tw-bg-opacity,1))}.dark\:hover\:bg-slate-800:hover:where([data-theme=dark],[data-theme=dark] *){--tw-bg-opacity:1;background-color:rgb(30 41 59/var(--tw-bg-opacity,1))}.dark\:focus\:border-cyan-400:focus:where([data-theme=dark],[data-theme=dark] *){--tw-border-opacity:1;border-color:rgb(34 211 238/var(--tw-border-opacity,1))}.dark\:focus\:ring-cyan-700:focus:where([data-theme=dark],[data-theme=dark] *){--tw-ring-opacity:1;--tw-ring-color:rgb(14 116 144/var(--tw-ring-opacity,1))}
\ No newline at end of file
diff --git a/theme/templates/base.html b/theme/templates/base.html
index c313e1a..245bfce 100644
--- a/theme/templates/base.html
+++ b/theme/templates/base.html
@@ -1,4 +1,4 @@
-{% load static tailwind_tags version add_to_qs %}<!DOCTYPE html>
+{% load static tailwind_tags version add_to_qs %}{% load i18n %}<!DOCTYPE html>
 <html lang="en" data-theme="{% if user.is_authenticated %}{{ user.theme_preference }}{% else %}dark{% endif %}">
     <!-- version: {% version %} -->
 	<head>
@@ -31,30 +31,30 @@
                 <a href="/"><div class="px-2 py-2 my-2 font-bold hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{{ site_title }}</div></a>
 
                 {% if not app_settings.SINGLE_TEAM %}
-                <a href="{% url "team_list" %}"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Teams</div></a>
+                <a href="{% url "team_list" %}"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Teams" %}</div></a>
                 {% endif %}
 
-                <a href="{% url "project_list" %}"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Projects</div></a>
+                <a href="{% url "project_list" %}"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Projects" %}</div></a>
 
                 {% if project %}
-                <a href="{% url "issue_list_open" project_pk=project.pk %}{% current_qs %}"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Issues ({{ project.name }})</div></a>
+                <a href="{% url "issue_list_open" project_pk=project.pk %}{% current_qs %}"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Issues" %} ({{ project.name }})</div></a>
                 {% endif %}
 
                 <div class="ml-auto flex">
                 {% if app_settings.USE_ADMIN and user.is_staff %}
-                <a href="/admin/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Admin</div></a>
+                <a href="/admin/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Admin" %}</div></a>
                 {% endif %}
 
                 {% if user.is_superuser %}
-                <a href="/users/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Users</div></a>
-                <a href="/bsmain/auth_tokens/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Tokens</div></a>
+                <a href="/users/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Users" %}</div></a>
+                <a href="/bsmain/auth_tokens/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Tokens" %}</div></a>
                 {% endif %}
 
                 {% if logged_in_user.is_anonymous %}
-                    <a href="/accounts/login/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Login</div></a>  {# I don't think this is actually ever shown in practice, because you must always be logged in #}
+                    <a href="/accounts/login/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Login" %}</div></a>  {# I don't think this is actually ever shown in practice, because you must always be logged in #}
                 {% else %}
-                    <a href="/accounts/preferences/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">Preferences</div></a>
-                    <div class="px-4 py-2 my-2 mr-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl"><form id="logout-form" method="post" action="{% url 'logout' %}">{% csrf_token %}<button type="submit">Log out</button></form></div>
+                    <a href="/accounts/preferences/"><div class="px-4 py-2 my-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl">{% translate "Preferences" %}</div></a>
+                    <div class="px-4 py-2 my-2 mr-2 hover:bg-slate-300 dark:hover:bg-slate-700 rounded-xl"><form id="logout-form" method="post" action="{% url 'logout' %}">{% csrf_token %}<button type="submit">{% translate "Log out" %}</button></form></div>
                 {% endif %}
                 </div>
             </div>
diff --git a/theme/templatetags/code.py b/theme/templatetags/code.py
index e222675..2f42a93 100644
--- a/theme/templatetags/code.py
+++ b/theme/templatetags/code.py
@@ -1,6 +1,7 @@
 from pygments import highlight
 from pygments.lexers import get_lexer_by_name
 from pygments.formatters import HtmlFormatter
+from bugsink.utils import assert_
 
 from django import template
 
@@ -28,8 +29,8 @@ class CodeNode(template.Node):
         content = "\n".join([line.rstrip() for line in content.split("\n")])
 
         lang_identifier, code = content.split("\n", 1)
-        assert lang_identifier.startswith(":::") or lang_identifier.startswith("#!"), \
-            "Expected code block identifier ':::' or '#!' not " + lang_identifier
+        assert_(lang_identifier.startswith(":::") or lang_identifier.startswith("#!"),
+                "Expected code block identifier ':::' or '#!' not " + lang_identifier)
 
         lang = lang_identifier[3:].strip() if lang_identifier.startswith(":::") else lang_identifier[2:].strip()
         is_shebang = lang_identifier.startswith("#!")
@@ -37,4 +38,5 @@ class CodeNode(template.Node):
 
         lexer = get_lexer_by_name(lang, stripall=True)
 
-        return highlight(code, lexer, formatter).replace("highlight", "p-4 mt-4 bg-slate-50 dark:bg-slate-800 syntax-coloring")
+        return highlight(code, lexer, formatter).replace(
+            "highlight", "p-4 mt-4 bg-slate-50 dark:bg-slate-800 syntax-coloring")
diff --git a/theme/templatetags/issues.py b/theme/templatetags/issues.py
index 98e67b1..f1f4606 100644
--- a/theme/templatetags/issues.py
+++ b/theme/templatetags/issues.py
@@ -1,12 +1,16 @@
+from datetime import datetime
 import re
 from django import template
 from pygments import highlight
 from pygments.formatters import HtmlFormatter
 
 from django.utils.html import escape
-from django.utils.safestring import mark_safe
+from django.utils.safestring import SafeData, mark_safe
+from django.template.defaultfilters import date
 
+from compat.timestamp import parse_timestamp
 
+from bugsink.utils import assert_
 from bugsink.pygments_extensions import guess_lexer_for_filename, lexer_for_platform
 
 register = template.Library()
@@ -19,7 +23,7 @@ def _split(joined, lengths):
         result.append(joined[start:start + length])
         start += length
 
-    assert [len(r) for r in result] == lengths
+    assert_([len(r) for r in result] == lengths)
     return result
 
 
@@ -48,7 +52,7 @@ def _core_pygments(code, filename=None, platform=None):
     # a line is" is not properly defined. (i.e.: is the thing after the final newline a line or not, both for the input
     # and the output?). At the level of _pygmentize_lines the idea of a line is properly defined, so we only have to
     # deal with pygments' funnyness.
-    # assert len(code.split("\n")) == result.count("\n"), "%s != %s" % (len(code.split("\n")), result.count("\n"))
+    # assert_(len(code.split("\n")) == result.count("\n"), "%s != %s" % (len(code.split("\n")), result.count("\n")))
 
     return result
 
@@ -67,7 +71,7 @@ def _pygmentize_lines(lines, filename=None, platform=None):
 
     # [:-1] to remove the last empty line, a result of split()
     result = _core_pygments(code, filename=filename, platform=platform).split('\n')[:-1]
-    assert len(lines) == len(result), "%s != %s" % (len(lines), len(result))
+    assert_(len(lines) == len(result), "%s != %s" % (len(lines), len(result)))
     return result
 
 
@@ -99,9 +103,10 @@ def pygmentize(value, platform):
 
     pre_context, context_lines, post_context = _split(lines, lengths)
 
-    value['pre_context'] = [mark_safe(s) for s in pre_context]
-    value['context_line'] = mark_safe(context_lines[0])
-    value['post_context'] = [mark_safe(s) for s in post_context]
+    # no_bandit_expl: see tests.TestPygmentizeEscape
+    value['pre_context'] = [mark_safe(s) for s in pre_context]  # nosec B703, B308
+    value['context_line'] = mark_safe(context_lines[0])  # nosec B703, B308
+    value['post_context'] = [mark_safe(s) for s in post_context]  # nosec B703, B308
 
     return value
 
@@ -137,6 +142,18 @@ def shortsha(value):
     return value[:12]
 
 
+def safe_join(sep, items, strict=False):
+    """join() that takes safe strings into account; strict=True means: I expect all inputs to be safe"""
+
+    text = sep.join(items)
+    if isinstance(sep, SafeData) and all(isinstance(i, SafeData) for i in items):
+        # no_bandit_expl: as per the check right above
+        return mark_safe(text)  # nosec B703, B308
+    if strict:
+        raise ValueError("Cannot join non-safe in strict mode")
+    return text
+
+
 @register.filter()
 def format_var(value):
     """Formats a variable for display in the template; deals with 'marked as incomplete'."""
@@ -166,23 +183,27 @@ def format_var(value):
 
     def gen_list(lst):
         for value in lst:
-            yield "", storevalue(value)
+            yield escape(""), storevalue(value)
 
         if hasattr(lst, "incomplete"):
-            yield f"<i>&lt;{lst.incomplete} items trimmed…&gt;</i>", None
+            # no_bandit_expl: constant string w/ substitution of an int (asserted)
+            assert_(isinstance(lst.incomplete, int))
+            yield mark_safe(f"<i>&lt;{lst.incomplete} items trimmed…&gt;</i>"), None  # nosec B703, B308
 
     def gen_dict(d):
         for (k, v) in d.items():
-            yield escape(repr(k)) + ": ", storevalue(v)
+            yield escape(repr(k)) + escape(": "), storevalue(v)
 
         if hasattr(d, "incomplete"):
-            yield f"<i>&lt;{d.incomplete} items trimmed…&gt;</i>", None
+            # no_bandit_expl: constant string w/ substitution of an int (asserted)
+            assert_(isinstance(d.incomplete, int))
+            yield mark_safe(f"<i>&lt;{d.incomplete} items trimmed…&gt;</i>"), None  # nosec B703, B308
 
     def gen_switch(obj):
         if isinstance(obj, list):
-            return bracket_wrap(gen_list(obj), "[", ", ", "]")
+            return bracket_wrap(gen_list(obj), escape("["), escape(", "), escape("]"))
         if isinstance(obj, dict):
-            return bracket_wrap(gen_dict(obj), "{", ", ", "}")
+            return bracket_wrap(gen_dict(obj), escape("{"), escape(", "), escape("}"))
         return gen_base(obj)
 
     result = []
@@ -205,8 +226,7 @@ def format_var(value):
             stack.append(todo)
             todo = gen_switch(recurse())
 
-    # mark_safe is OK because the only non-escaped characters are the brackets, commas, and colons.
-    return mark_safe("".join(result))
+    return safe_join(escape(""), result, strict=True)
 
 
 # recursive equivalent:
@@ -214,19 +234,17 @@ def format_var(value):
 # def format_var(value):
 #     """Formats a variable for display in the template; deals with 'marked as incomplete'.
 #     """
-#     # mark_safe is OK because the only non-escaped characters are the brackets, commas, and colons.
-#
 #     if isinstance(value, dict):
-#         parts = [(escape(repr(k)) + ": " + format_var(v)) for (k, v) in value.items()]
+#         parts = [(escape(repr(k)) + escape(": ") + format_var(v)) for (k, v) in value.items()]
 #         if hasattr(value, "incomplete"):
 #             parts.append(mark_safe(f"<i>&lt;{value.incomplete} items trimmed…&gt;</i>"))
-#         return mark_safe("{" + ", ".join(parts) + "}")
+#         return escape("{") + safe_join(escape(", "), parts, strict=True) + escape("}")
 #
 #     if isinstance(value, list):
 #         parts = [format_var(v) for v in value]
 #         if hasattr(value, "incomplete"):
 #             parts.append(mark_safe(f"<i>&lt;{value.incomplete} items trimmed…&gt;</i>"))
-#         return mark_safe("[" + ", ".join(parts) + "]")
+#         return escape("[") + safe_join(escape(", "), parts, strict=True) + escape("]")
 #
 #     return escape(value)
 
@@ -235,3 +253,33 @@ def format_var(value):
 def incomplete(value):
     # needed to disinguish between 'has an incomplete' attr (set by us) and 'contains an incomplete key' (event-data)
     return hasattr(value, "incomplete")
+
+
+def _date_with_milis_html(timestamp):
+    # no_bandit_expl: constant string w/ substitution of dates/milis (escaped even), see also TimestampWithMillisTagTest
+    return (
+        mark_safe('<span class="whitespace-nowrap">') +  # nosec
+        escape(date(timestamp, "j M G:i:s")) + mark_safe(".") +  # nosec
+        mark_safe('<span class="text-xs">') + escape(date(timestamp, "u")[:3]) +  # nosec
+        mark_safe('</span></span>'))  # nosec
+
+
+@register.filter
+def timestamp_with_millis(value):
+    """
+    Timestamp formatting with milliseconds; robust for datetime.datetime, as well as the strings/floats/ints that may
+    show up in the event data.
+    """
+    if isinstance(value, datetime):
+        dt = value
+
+    else:
+        try:
+            dt = parse_timestamp(value)
+        except Exception:
+            return value
+
+    if dt is None:
+        return value
+
+    return _date_with_milis_html(dt)
diff --git a/theme/tests.py b/theme/tests.py
index cd6e168..da4f2c6 100644
--- a/theme/tests.py
+++ b/theme/tests.py
@@ -1,10 +1,13 @@
 from unittest import TestCase as RegularTestCase
 
+from django.utils.safestring import SafeString
+from django.utils.html import conditional_escape
 from bugsink.pygments_extensions import choose_lexer_for_pattern, get_all_lexers
 
 from events.utils import IncompleteList, IncompleteDict
 
-from .templatetags.issues import _pygmentize_lines as actual_pygmentize_lines, format_var
+from .templatetags.issues import (
+    _pygmentize_lines as actual_pygmentize_lines, format_var, pygmentize, timestamp_with_millis)
 
 
 def _pygmentize_lines(lines):
@@ -109,6 +112,18 @@ class TestFormatVar(RegularTestCase):
             self._format_var(var),
         )
 
+    def test_format_var_nested_escaping(self):
+        # like format_nested, but with the focus on "does escaping happen correctly?"
+        var = {
+            "hacker": ["<script>"],
+        }
+
+        self.assertEqual(
+            '{&#x27;hacker&#x27;: [&lt;script&gt;]}',
+            format_var(var),
+        )
+        self.assertTrue(isinstance(format_var(var), SafeString))
+
     def test_format_var_deep(self):
         def _deep(level):
             result = None
@@ -138,3 +153,46 @@ class TestFormatVar(RegularTestCase):
             "{'a': 1, 'b': 2, 'c': 3, <i>&lt;9 items trimmed…&gt;</i>}",
             self._format_var(var),
         )
+
+
+class TestPygmentizeEscapeMarkSafe(RegularTestCase):
+
+    def test_escapes_html_in_all_contexts(self):
+        out = pygmentize(
+            {
+                'filename':     'test.py',
+                'pre_context':  ['<script>pre script</script>'],
+                'context_line': '<script>my script</script>',
+                'post_context': ['<script>post script</script>'],
+            },
+            platform='python',
+        )
+
+        for line in out['pre_context'] + [out['context_line']] + out['post_context']:
+            self.assertIsInstance(line, SafeString)
+
+            # we just check for the non-existance of <script> and </script> here because asserting against "whatever
+            # pygmentize does" is not very useful, as it may change in the future.
+            self.assertFalse("<script>" in line)
+            self.assertFalse("</script>" in line)
+
+
+class TimestampWithMillisTagTest(RegularTestCase):
+    def test_float_input_produces_expected_safe_string(self):
+        ts = 1620130245.1234
+
+        self.assertEqual(
+            '<span class="whitespace-nowrap">4 May 12:10:45.<span class="text-xs">123</span></span>',
+            timestamp_with_millis(ts))
+
+        self.assertTrue(isinstance(timestamp_with_millis(ts), SafeString))
+
+    def test_timestamp_with_milis_is_not_a_target_for_html_injection(self):
+        # even though the string input is returned as-is for this case, the tag will not mark it as safe in the process.
+        ts = "<script>alert('hello');</script>"
+
+        self.assertEqual(
+            '&lt;script&gt;alert(&#x27;hello&#x27;);&lt;/script&gt;',
+            conditional_escape(timestamp_with_millis(ts)))
+
+        self.assertFalse(isinstance(timestamp_with_millis(ts), SafeString))
diff --git a/tools/is_tracked_by_tailwind.py b/tools/is_tracked_by_tailwind.py
new file mode 100755
index 0000000..9dda11f
--- /dev/null
+++ b/tools/is_tracked_by_tailwind.py
@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+
+# Determine whether the Tailwind build must run based on staged files.
+# Reads null-separated paths from stdin, compares against globs listed in theme/static_src/tailwind.config.js
+
+import pathlib
+import re
+import sys
+
+
+def expand_optional_dirs(pattern):
+    """
+    Python's Path.match() treats '**/' strictly — it requires at least one directory to match.
+    But in globbing systems like Tailwind or bash, '**/' can also mean 'zero directories'.
+    This function expands all combinations where each '**/' is either kept or removed,
+    so that Path.match() can simulate this more flexible behavior.
+
+    For example:
+    'theme/**/templates/**/*.html' →
+    [
+        'theme/**/templates/**/*.html',
+        'theme/templates/**/*.html',
+        'theme/**/templates/*.html',
+        'theme/templates/*.html',
+    ]
+
+    Use this to match paths more like Tailwind does, where '**' can mean "nothing here".
+    """
+    parts = pattern.split("**/")
+    if len(parts) == 1:
+        return [pattern]  # no '**/' present
+
+    results = []
+
+    # There are N-1 '**/' positions
+    num_stars = len(parts) - 1
+
+    # For each combination of keeping or removing the '**/' parts
+    for bits in range(2 ** num_stars):
+        new_pattern = parts[0]
+        for i in range(num_stars):
+            if (bits >> i) & 1:
+                new_pattern += "**/"
+            new_pattern += parts[i + 1]
+        results.append(new_pattern)
+
+    return results
+
+
+def path_matches_glob(path, glob_pattern):
+    """ Check if the given path matches any variant of the glob pattern (including '**'-as-nothing)."""
+    for variant in expand_optional_dirs(glob_pattern):
+        if pathlib.Path(path).match(variant):
+            return True
+    return False
+
+
+def files_from_stdin():
+    # Read from stdin as a single binary stream
+    raw = sys.stdin.buffer.read()
+    files = raw.decode("utf-8").split("\0")
+    files = [f for f in files if f]  # Remove empty final item
+    return files
+
+
+def parse_tailwind_config():
+    # tailwind.config.js is not JSON, so we can't use json.load().
+    # We extract the 'content: [...]' array with a regex,
+    # then pull all string literals using a regex.
+    # Any staged file under theme/static_src/ triggers a rebuild.
+
+    config_path = pathlib.Path("theme/static_src/tailwind.config.js")
+    text = config_path.read_text()
+
+    # Extract the 'content: [ ... ]' block.
+    match = re.search(r'content\s*:\s*\[(.*?)\]', text, re.DOTALL)
+    if not match:
+        raise RuntimeError("Could not find content array in Tailwind config")
+    raw_content_block = match.group(1)
+
+    string_literals = []
+
+    for line in raw_content_block.splitlines():
+        line = line.strip()
+        if not line or not line.startswith(("'", '"')):
+            continue
+
+        # Match a string at the start of the line
+        match = re.match(r'''(['"])(.*?)\1''', line)
+        if not match:
+            raise ValueError(f"Invalid quoted string: {line}")
+
+        string_literals.append(match.group(2))
+
+    return string_literals
+
+
+def globs_from_string_literals(string_literals):
+    """Globs: resolve paths relative to the repo root instead of the config file."""
+
+    result = []
+    for string_literal in string_literals:
+        if string_literal.startswith("../../"):
+            result.append(string_literal[6:])  # Remove '../../' prefix
+        elif string_literal.startswith("../"):
+            result.append("theme/" + string_literal[3:])
+        else:
+            result.append(string_literal)
+
+    return result
+
+
+def any_file_matches_globs(files, globs):
+    for f in files:
+        for g in globs:
+            if path_matches_glob(f, g):
+                return True
+    return False
+
+
+if __name__ == "__main__":
+    files = files_from_stdin()
+    if not files:
+        print("no")
+        sys.exit(0)
+
+    if any(f.startswith("theme/static_src/") for f in files):
+        print("yes")
+        sys.exit(0)
+
+    string_literals = parse_tailwind_config()
+    globs = globs_from_string_literals(string_literals)
+
+    if any_file_matches_globs(files, globs):
+        print("yes")
+        sys.exit(0)
+
+    print("no")
diff --git a/tools/strip-trailing-whitespace.sh b/tools/strip-trailing-whitespace.sh
new file mode 100755
index 0000000..9b0b321
--- /dev/null
+++ b/tools/strip-trailing-whitespace.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+#
+# Strip trailing whitespace from tracked files with specific extensions.
+# Usage: ./tools/strip-trailing-whitespace.sh
+# Works on macOS (BSD sed) or Linux (GNU sed), but not both at once.
+
+set -euo pipefail
+
+# Extensions to include
+EXT_REGEX='\.(py|js|ts|sh|md|txt|html|css|bash)$'
+
+# Detect sed flavor
+if sed --version >/dev/null 2>&1; then
+    SED_CMD=(sed -i -e 's/[[:space:]]\+$//')
+elif sed -i '' testfile 2>/dev/null; then
+    SED_CMD=(sed -i '' -e 's/[[:space:]]\+$//')
+else
+    echo "Unsupported sed version. Must be GNU sed or BSD sed (macOS)." >&2
+    exit 1
+fi
+
+git ls-files -z | while IFS= read -r -d '' file; do
+    [[ -f "$file" ]] || continue
+    [[ "$file" =~ $EXT_REGEX ]] || continue
+
+    if grep -qE '[[:space:]]+$' "$file"; then
+        echo "Fixing: $file"
+        "${SED_CMD[@]}" "$file"
+    fi
+done
diff --git a/users/forms.py b/users/forms.py
index 190719a..740ea80 100644
--- a/users/forms.py
+++ b/users/forms.py
@@ -9,19 +9,16 @@ from django.core.exceptions import ValidationError
 from django.contrib.auth import password_validation
 from django.forms import ModelForm
 from django.utils.html import escape, mark_safe
+from django.utils.translation import gettext_lazy as _, get_language_info
+from django.conf import settings
 
 
 TRUE_FALSE_CHOICES = (
-    (True, 'Yes'),
-    (False, 'No')
+    (True, _("Yes")),
+    (False, _("No"))
 )
 
 
-def _(x):
-    # dummy gettext
-    return x
-
-
 User = get_user_model()
 
 
@@ -87,7 +84,7 @@ class UserEditForm(ModelForm):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         self.fields['username'].validators = [EmailValidator()]
-        self.fields['username'].label = "Email"
+        self.fields['username'].label = _("Email")
 
         self.fields['username'].help_text = None  # "Email" is descriptive enough
 
@@ -136,6 +133,18 @@ class SetPasswordForm(BaseSetPasswordForm):
         self.fields['new_password2'].help_text = None  # "Confirm password" is descriptive enough
 
 
+def language_choices():
+    items = [("auto", _("Auto (browser preference)"))]
+
+    for code, _label in settings.LANGUAGES:
+        info = get_language_info(code)
+        label = info["name_local"] \
+            if info["name_local"] == info["name_translated"] \
+            else f"{info['name_local']} ({info['name_translated']})"
+        items.append((code, label))
+    return items
+
+
 class PreferencesForm(ModelForm):
     # I haven't gotten a decent display for checkboxes in forms yet; the quickest hack around this is a ChoiceField
     send_email_alerts = forms.ChoiceField(
@@ -146,7 +155,13 @@ class PreferencesForm(ModelForm):
         required=True,
         widget=forms.Select(),
     )
+    language = forms.ChoiceField(
+        label=_("Language"),
+        choices=language_choices,
+        required=True,
+        widget=forms.Select(),
+    )
 
     class Meta:
         model = User
-        fields = ("send_email_alerts", "theme_preference",)
+        fields = ("send_email_alerts", "theme_preference", "language",)
diff --git a/users/migrations/0003_user_language.py b/users/migrations/0003_user_language.py
new file mode 100644
index 0000000..9952650
--- /dev/null
+++ b/users/migrations/0003_user_language.py
@@ -0,0 +1,16 @@
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("users", "0002_user_theme_preference"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="user",
+            name="language",
+            field=models.CharField(default="auto", max_length=10),
+        ),
+    ]
diff --git a/users/models.py b/users/models.py
index 68c4960..afe297c 100644
--- a/users/models.py
+++ b/users/models.py
@@ -3,6 +3,7 @@ import secrets
 from django.db import models
 from django.contrib.auth.models import AbstractUser
 from django.conf import settings
+from django.utils.translation import gettext_lazy as _
 
 
 class User(AbstractUser):
@@ -18,9 +19,9 @@ class User(AbstractUser):
     send_email_alerts = models.BooleanField(default=True, blank=True)
 
     THEME_CHOICES = [
-        ("system", "System Default"),
-        ("light", "Light"),
-        ("dark", "Dark"),
+        ("system", _("System Default")),
+        ("light", _("Light")),
+        ("dark", _("Dark")),
     ]
     theme_preference = models.CharField(
         max_length=10,
@@ -28,6 +29,14 @@ class User(AbstractUser):
         default="system",
         blank=False,
     )
+    language = models.CharField(
+        max_length=10,
+        # choices intentionally not set, we don't want changes to trigger migrations; the actual choices are set in
+        # forms.py; in Django 5.0 and up we can instead used a callable here
+        # choices=...
+        default="auto",
+        blank=False,
+    )
 
     class Meta:
         db_table = 'auth_user'
diff --git a/users/templates/mails/confirm_email.html b/users/templates/mails/confirm_email.html
index 3c7acba..ce8b9ce 100644
--- a/users/templates/mails/confirm_email.html
+++ b/users/templates/mails/confirm_email.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/users/templates/mails/reset_password_email.html b/users/templates/mails/reset_password_email.html
index bddf016..2661433 100644
--- a/users/templates/mails/reset_password_email.html
+++ b/users/templates/mails/reset_password_email.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/users/templates/mails/welcome_email.html b/users/templates/mails/welcome_email.html
index fe06894..f5edcbf 100644
--- a/users/templates/mails/welcome_email.html
+++ b/users/templates/mails/welcome_email.html
@@ -9,7 +9,7 @@
     <title></title>
     <style type="text/css" rel="stylesheet" media="all">
     /* Base ------------------------------ */
-    
+
     @import url("https://fonts.googleapis.com/css?family=Nunito+Sans:400,700&amp;display=swap");
     body {
       width: 100% !important;
@@ -17,19 +17,19 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     a {
       color: #3869D4;
     }
-    
+
     a img {
       border: none;
     }
-    
+
     td {
       word-break: break-word;
     }
-    
+
     .preheader {
       display: none !important;
       visibility: hidden;
@@ -42,13 +42,13 @@
       overflow: hidden;
     }
     /* Type ------------------------------ */
-    
+
     body,
     td,
     th {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     h1 {
       margin-top: 0;
       color: #333333;
@@ -56,7 +56,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h2 {
       margin-top: 0;
       color: #333333;
@@ -64,7 +64,7 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     h3 {
       margin-top: 0;
       color: #333333;
@@ -72,12 +72,12 @@
       font-weight: bold;
       text-align: left;
     }
-    
+
     td,
     th {
       font-size: 16px;
     }
-    
+
     p,
     ul,
     ol,
@@ -86,29 +86,29 @@
       font-size: 16px;
       line-height: 1.625;
     }
-    
+
     p.sub {
       font-size: 13px;
     }
     /* Utilities ------------------------------ */
-    
+
     .align-right {
       text-align: right;
     }
-    
+
     .align-left {
       text-align: left;
     }
-    
+
     .align-center {
       text-align: center;
     }
-    
+
     .u-margin-bottom-none {
       margin-bottom: 0;
     }
     /* Buttons ------------------------------ */
-    
+
     .button {
       background-color: #3869D4;
       border-top: 10px solid #3869D4;
@@ -123,7 +123,7 @@
       -webkit-text-size-adjust: none;
       box-sizing: border-box;
     }
-    
+
     .button--green {
       background-color: #22BC66;
       border-top: 10px solid #22BC66;
@@ -131,7 +131,7 @@
       border-bottom: 10px solid #22BC66;
       border-left: 18px solid #22BC66;
     }
-    
+
     .button--red {
       background-color: #FF6136;
       border-top: 10px solid #FF6136;
@@ -139,7 +139,7 @@
       border-bottom: 10px solid #FF6136;
       border-left: 18px solid #FF6136;
     }
-    
+
     @media only screen and (max-width: 500px) {
       .button {
         width: 100% !important;
@@ -147,21 +147,21 @@
       }
     }
     /* Attribute list ------------------------------ */
-    
+
     .attributes {
       margin: 0 0 21px;
     }
-    
+
     .attributes_content {
       background-color: #F4F4F7;
       padding: 16px;
     }
-    
+
     .attributes_item {
       padding: 0;
     }
     /* Related Items ------------------------------ */
-    
+
     .related {
       width: 100%;
       margin: 0;
@@ -170,31 +170,31 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .related_item {
       padding: 10px 0;
       color: #CBCCCF;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .related_item-title {
       display: block;
       margin: .5em 0 0;
     }
-    
+
     .related_item-thumb {
       display: block;
       padding-bottom: 10px;
     }
-    
+
     .related_heading {
       border-top: 1px solid #CBCCCF;
       text-align: center;
       padding: 25px 0 10px;
     }
     /* Discount Code ------------------------------ */
-    
+
     .discount {
       width: 100%;
       margin: 0;
@@ -205,33 +205,33 @@
       background-color: #F4F4F7;
       border: 2px dashed #CBCCCF;
     }
-    
+
     .discount_heading {
       text-align: center;
     }
-    
+
     .discount_body {
       text-align: center;
       font-size: 15px;
     }
     /* Social Icons ------------------------------ */
-    
+
     .social {
       width: auto;
     }
-    
+
     .social td {
       padding: 0;
       width: auto;
     }
-    
+
     .social_icon {
       height: 20px;
       margin: 0 8px 10px 8px;
       padding: 0;
     }
     /* Data table ------------------------------ */
-    
+
     .purchase {
       width: 100%;
       margin: 0;
@@ -240,7 +240,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_content {
       width: 100%;
       margin: 0;
@@ -249,50 +249,50 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .purchase_item {
       padding: 10px 0;
       color: #51545E;
       font-size: 15px;
       line-height: 18px;
     }
-    
+
     .purchase_heading {
       padding-bottom: 8px;
       border-bottom: 1px solid #EAEAEC;
     }
-    
+
     .purchase_heading p {
       margin: 0;
       color: #85878E;
       font-size: 12px;
     }
-    
+
     .purchase_footer {
       padding-top: 15px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .purchase_total {
       margin: 0;
       text-align: right;
       font-weight: bold;
       color: #333333;
     }
-    
+
     .purchase_total--label {
       padding: 0 15px 0 0;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
     }
-    
+
     p {
       color: #51545E;
     }
-    
+
     .email-wrapper {
       width: 100%;
       margin: 0;
@@ -302,7 +302,7 @@
       -premailer-cellspacing: 0;
       background-color: #F2F4F6;
     }
-    
+
     .email-content {
       width: 100%;
       margin: 0;
@@ -312,16 +312,16 @@
       -premailer-cellspacing: 0;
     }
     /* Masthead ----------------------- */
-    
+
     .email-masthead {
       padding: 25px 0;
       text-align: center;
     }
-    
+
     .email-masthead_logo {
       width: 94px;
     }
-    
+
     .email-masthead_name {
       font-size: 16px;
       font-weight: bold;
@@ -330,7 +330,7 @@
       text-shadow: 0 1px 0 white;
     }
     /* Body ------------------------------ */
-    
+
     .email-body {
       width: 100%;
       margin: 0;
@@ -339,7 +339,7 @@
       -premailer-cellpadding: 0;
       -premailer-cellspacing: 0;
     }
-    
+
     .email-body_inner {
       width: 570px;
       margin: 0 auto;
@@ -349,7 +349,7 @@
       -premailer-cellspacing: 0;
       background-color: #FFFFFF;
     }
-    
+
     .email-footer {
       width: 570px;
       margin: 0 auto;
@@ -359,11 +359,11 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .email-footer p {
       color: #A8AAAF;
     }
-    
+
     .body-action {
       width: 100%;
       margin: 30px auto;
@@ -373,25 +373,25 @@
       -premailer-cellspacing: 0;
       text-align: center;
     }
-    
+
     .body-sub {
       margin-top: 25px;
       padding-top: 25px;
       border-top: 1px solid #EAEAEC;
     }
-    
+
     .content-cell {
       padding: 45px;
     }
     /*Media Queries ------------------------------ */
-    
+
     @media only screen and (max-width: 600px) {
       .email-body_inner,
       .email-footer {
         width: 100% !important;
       }
     }
-    
+
     @media (prefers-color-scheme: dark) {
       body,
       .email-body,
@@ -422,7 +422,7 @@
         text-shadow: none !important;
       }
     }
-    
+
     :root {
       color-scheme: light dark;
       supported-color-schemes: light dark;
@@ -442,11 +442,11 @@
       margin: 0;
       -webkit-text-size-adjust: none;
     }
-    
+
     body {
       font-family: "Nunito Sans", Helvetica, Arial, sans-serif;
     }
-    
+
     body {
       background-color: #F2F4F6;
       color: #51545E;
diff --git a/users/templates/users/confirm_email.html b/users/templates/users/confirm_email.html
index 446757a..7175a22 100644
--- a/users/templates/users/confirm_email.html
+++ b/users/templates/users/confirm_email.html
@@ -1,5 +1,6 @@
 {% extends "barest_base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Confirm email · {{ site_title }}{% endblock %}
 
@@ -14,12 +15,12 @@
         <div class="p-12 md:pt-24 md:pl-24 md:pr-24 md:pb-16">
 
             <div class="mb-8">
-                Confirm your email address by clicking the button below.
+                {% translate "Confirm your email address by clicking the button below." %}
             </div>
 
             <form method="post" action=".">
                 {% csrf_token %}
-                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">Confirm</button>
+                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">{% translate "Confirm" %}</button>
             </form>
         </div>
 
diff --git a/users/templates/users/confirm_email_sent.html b/users/templates/users/confirm_email_sent.html
index 6cfaec0..01adc91 100644
--- a/users/templates/users/confirm_email_sent.html
+++ b/users/templates/users/confirm_email_sent.html
@@ -1,5 +1,6 @@
 {% extends "barest_base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Verification email sent · {{ site_title }}{% endblock %}
 
@@ -13,7 +14,7 @@
 
         <div class="p-12 md:pt-24 md:pl-24 md:pr-24 md:pb-16">
 
-            A verification email has been sent to your email address. Please verify your email address to complete the registration process.
+            {% translate "A verification email has been sent to your email address. Please verify your email address to complete the registration process." %}
 
         </div>
 
diff --git a/users/templates/users/logged_out.html b/users/templates/users/logged_out.html
index d71f3f8..12e52b1 100644
--- a/users/templates/users/logged_out.html
+++ b/users/templates/users/logged_out.html
@@ -1,5 +1,6 @@
 {% extends "barest_base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Logged out · {{ site_title }}{% endblock %}
 
@@ -12,7 +13,7 @@
         </div>
 
         <div class="p-12 md:pt-24 md:pl-24 md:pr-24 md:pb-16">
-        You have been logged out. <a href="{% url 'login' %}" class="text-cyan-500 dark:text-cyan-300">Log in again</a>.
+        {% translate "You have been logged out." %} <a href="{% url 'login' %}" class="text-cyan-500 dark:text-cyan-300">{% translate "Log in again</a>." %}
         </div>
 
     </div>
diff --git a/users/templates/users/preferences.html b/users/templates/users/preferences.html
index bc04472..d891668 100644
--- a/users/templates/users/preferences.html
+++ b/users/templates/users/preferences.html
@@ -1,6 +1,7 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}User Preferences · {{ site_title }}{% endblock %}
 
@@ -23,13 +24,14 @@
         {% endif %}
 
         <div>
-            <h1 class="text-4xl my-4 font-bold">User Preferences</h1>
+            <h1 class="text-4xl my-4 font-bold">{% translate "User Preferences" %}</h1>
         </div>
 
         {% tailwind_formfield form.send_email_alerts %}
         {% tailwind_formfield form.theme_preference %}
+        {% tailwind_formfield form.language %}
 
-        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
+        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
         </form>
 
     </div>
diff --git a/users/templates/users/request_reset_password.html b/users/templates/users/request_reset_password.html
index 770d592..9704c53 100644
--- a/users/templates/users/request_reset_password.html
+++ b/users/templates/users/request_reset_password.html
@@ -1,6 +1,7 @@
 {% extends "barest_base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}Resend confirmation · {{ site_title }}{% endblock %}
 
@@ -19,11 +20,11 @@
 
                 {% tailwind_formfield_implicit form.email %}
 
-                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">Reset password</button>
+                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">{% translate "Reset password" %}</button>
             </form>
 
             <div class="mt-4">
-                <a href="{% url 'login' %}" class="text-slate-800 dark:text-slate-100">Log in instead</a>
+                <a href="{% url 'login' %}" class="text-slate-800 dark:text-slate-100">{% translate "Log in instead" %}</a>
             </div>
         </div>
 
diff --git a/users/templates/users/resend_confirmation.html b/users/templates/users/resend_confirmation.html
index a5471b9..85a3366 100644
--- a/users/templates/users/resend_confirmation.html
+++ b/users/templates/users/resend_confirmation.html
@@ -1,6 +1,7 @@
 {% extends "barest_base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}Resend confirmation · {{ site_title }}{% endblock %}
 
@@ -19,7 +20,7 @@
 
                 {% tailwind_formfield_implicit form.email %}
 
-                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">Resend verification email</button>
+                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">{% translate "Resend verification email" %}</button>
             </form>
 
             <div class="mt-4">
diff --git a/users/templates/users/reset_password.html b/users/templates/users/reset_password.html
index 165b76b..5d2eb34 100644
--- a/users/templates/users/reset_password.html
+++ b/users/templates/users/reset_password.html
@@ -1,6 +1,7 @@
 {% extends "barest_base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
 {% block title %}Reset password · {{ site_title }}{% endblock %}
 
@@ -23,12 +24,12 @@
 
                 <input type="hidden" name="next" value="{{ next }}" />
 
-                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">Reset password</button>
+                <button class="bg-slate-800 font-medium p-2 md:p-4 text-white uppercase w-full">{% translate "Reset password" %}</button>
 
             </form>
 
             <div class="mt-4">
-                <a href="{% url 'login' %}" class="text-slate-800 dark:text-slate-100">Log in instead</a>
+                <a href="{% url 'login' %}" class="text-slate-800 dark:text-slate-100">{% translate "Log in instead" %}</a>
             </div>
         </div>
 
diff --git a/users/templates/users/reset_password_email_sent.html b/users/templates/users/reset_password_email_sent.html
index b0347bc..9bc7a14 100644
--- a/users/templates/users/reset_password_email_sent.html
+++ b/users/templates/users/reset_password_email_sent.html
@@ -1,5 +1,6 @@
 {% extends "barest_base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Password reset sent · {{ site_title }}{% endblock %}
 
@@ -12,7 +13,7 @@
         </div>
 
         <div class="p-12 md:pt-24 md:pl-24 md:pr-24 md:pb-16">
-            A password reset link has been sent to your email address. Please check your inbox and follow the instructions to reset your password.
+            {% translate "A password reset link has been sent to your email address. Please check your inbox and follow the instructions to reset your password." %}
         </div>
 
     </div>
diff --git a/users/templates/users/user_edit.html b/users/templates/users/user_edit.html
index ea06be5..dd83fbf 100644
--- a/users/templates/users/user_edit.html
+++ b/users/templates/users/user_edit.html
@@ -1,8 +1,9 @@
 {% extends "base.html" %}
 {% load static %}
 {% load tailwind_forms %}
+{% load i18n %}
 
-{% block title %}Edit {{ form.instance.username }} · {{ site_title }}{% endblock %}
+{% block title %}{% translate "Edit" %} {{ form.instance.username }} · {{ site_title }}{% endblock %}
 
 {% block content %}
 
@@ -18,13 +19,13 @@
         </div>
 
         <div class="mt-4 mb-4">
-            Settings for "{{ form.instance.username }}".
+            {% blocktranslate with username=form.instance.username %}Settings for {{ username }}.{% endblocktranslate %}
         </div>
 
         {% tailwind_formfield form.username %}
 
-        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">Save</button>
-        <a href="{% url "user_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">Cancel</a>
+        <button name="action" value="invite" class="font-bold text-slate-800 dark:text-slate-100 border-slate-500 dark:border-slate-400 pl-4 pr-4 pb-2 pt-2 border-2 bg-cyan-200 dark:bg-cyan-700 hover:bg-cyan-400 dark:hover:bg-cyan-600 active:ring rounded-md">{% translate "Save" %}</button>
+        <a href="{% url "user_list" %}" class="text-cyan-500 dark:text-cyan-300 font-bold ml-2">{% translate "Cancel" %}</a>
         </form>
 
     </div>
diff --git a/users/templates/users/user_list.html b/users/templates/users/user_list.html
index 29ac354..bd952a3 100644
--- a/users/templates/users/user_list.html
+++ b/users/templates/users/user_list.html
@@ -1,5 +1,6 @@
 {% extends "base.html" %}
 {% load static %}
+{% load i18n %}
 
 {% block title %}Users · {{ site_title }}{% endblock %}
 
@@ -12,7 +13,7 @@
             <h3 class="text-2xl font-semibold text-slate-800 dark:text-slate-100 mt-3 mb-4">Delete User</h3>
             <div class="mt-4 mb-6">
                 <p class="text-slate-700 dark:text-slate-300">
-                    Are you sure you want to delete this user? This action cannot be undone.
+                    {% translate "Are you sure you want to delete this user? This action cannot be undone." %}
                 </p>
             </div>
             <div class="flex items-center justify-center space-x-4 mb-4">
@@ -41,7 +42,7 @@
         {% endif %}
 
         <div class="flex">
-            <h1 class="text-4xl mt-4 font-bold">Users</h1>
+            <h1 class="text-4xl mt-4 font-bold">{% translate "Users" %}</h1>
             {% comment %}
             Our current invite-system is tied to either a team or a project; no "global" invites (yet).
             <div class="ml-auto mt-6">
@@ -58,7 +59,7 @@
           <tbody>
                 <thead>
                 <tr class="bg-slate-200 dark:bg-slate-800">
-                    <th class="w-full p-4 text-left text-xl" colspan="2">Users</th>
+                    <th class="w-full p-4 text-left text-xl" colspan="2">{% translate "Users" %}</th>
                 </tr>
 
                 {% for user in users %}
@@ -67,7 +68,7 @@
                     <div>
                         <a href="{% url "user_edit" user_pk=user.pk %}" class="text-xl text-cyan-500 dark:text-cyan-300 font-bold">{{ user.username }}</a>
                         {% if member.is_superuser %}
-                        <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">Superuser</span>
+                        <span class="bg-cyan-100 dark:bg-cyan-900 rounded-2xl px-4 py-2 ml-2 text-sm">{% translate "Superuser" %}</span>
                         {% endif %}
                     </div>
                 </td>
diff --git a/users/views.py b/users/views.py
index 78d26fb..ad66680 100644
--- a/users/views.py
+++ b/users/views.py
@@ -7,9 +7,12 @@ from django.http import Http404
 from django.utils import timezone
 from django.contrib import messages
 from django.contrib.auth.decorators import login_required, user_passes_test
+from django.utils.translation import gettext as _
+from django.utils import translation
 
 from bugsink.app_settings import get_settings, CB_ANYBODY
 from bugsink.decorators import atomic_for_request_method
+from bugsink.middleware import get_chosen_language
 
 from .forms import (
     UserCreationForm, ResendConfirmationForm, RequestPasswordResetForm, SetPasswordForm, PreferencesForm, UserEditForm)
@@ -225,8 +228,13 @@ def preferences(request):
         form = PreferencesForm(request.POST, instance=user)
 
         if form.is_valid():
-            form.save()
-            messages.success(request, "Updated preferences")
+            user = form.save()
+
+            # activate the selected language immediately for the Success message; we've already passed the middleware
+            # stage (which looked at the pre-change language), so we need to do this ourselves with the fresh value.
+            translation.activate(get_chosen_language(user, request))
+
+            messages.success(request, _("Updated preferences"))
             return redirect('preferences')
 
     else: