This MR introduces an email summary to be sent when CSV-based bulk
placeholder reassignment completes.

Related issue: https://gitlab.com/gitlab-org/gitlab/-/issues/458841

Call `help_page_url` directly with string literal arguments.

Rename index.md to _index.md and update crosslinks

- ongoing project to breakup the massive notify/notification service.
- see https://gitlab.com/gitlab-org/gitlab/-/issues/466556

- ongoing project to breakup the massive notify/notification service.
- see https://gitlab.com/gitlab-org/gitlab/-/issues/466557

Previously, we forced US-ASCII encoding to work around a bug in
premailer 1.10.x.

The bug is now fixed in 1.11.0 so we do not need this anymore.

This also fixes how some mail servers handle HTML-encoded entities.

Changelog: fixed

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/507531

**Problem**

Bulk import configuration stores a url that might include HTTP
authentication credentials. This url is used in success import emails
and it exposes the credentials.

**Solution**

Add `safe_url` method to display a masked URL for email notifications.

Changelog: changed

Changelog: changed
EE: true

Changelog: changed

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/213383

**Problem**

A custom email suffix is missing for `Emails on Push` and `Admin
notifications`.

**Solution**

Use `#subject` method to wrap subject text. It automatically applies
email suffix if it's missing.

Changelog: fixed

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/10101

**Problem**

In our code base, we frequently provide the string "match" as type. In
those cases, match? would return false.

**Solution**

Use strings comparison to check value equality

Changelog: fixed

This silently broke a number of specs because it was
actually interfering with real domain logic.

The reason was UrlBlocker trying to resolve a fake
SMTP server in email related tests when creating
test records. These tests now bypass validation.

In addition to the current 7 day notifications, this change will add 30
and 60 day email notifications for expiring personal access tokens. This
also applies to notifications to owners for project and group access
tokens.

For now, webhooks will only issue 7 day notifications, since currently
there is not an easy way for users to determine from the payload if a
notification is for 7, 30, or 60 days.

This change adds HTML layouts to the project export and project transfer emails. 
Also adds a new dev preview for the repository cleanup emails.

Changelog: changed

This prevents placeholder contributions being remapped to the wrong user
after a reassignment has already been accepted.

Changelog: fixed

Uses geocoder gem to get city, country code and ISP name from given IP address.
Uses i18n_data gem to transform country code to country name, e.g. JP to Japan.
Location and ISP info is displayed in the sign in notification email when found,
see http://gdk.local:3000/rails/mailers/notify/unknown_sign_in_email.html

Changelog: added
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/163914

- ongoing project to breakup the massive notify/notification
  service.
- see https://gitlab.com/gitlab-org/gitlab/-/issues/466562

After link cleanup which added .md to all links, re-enable
linter to enforce rule

Changelog: changed

Contributes to https://gitlab.com/gitlab-org/gitlab/-/issues/483085

**Problem**

Synchrounous rewriting of repository history is too slow. We are going
to make it asynchronous instead. But it's currently missing a
notification channel for users to receive updates about the processing
status.

**Solution**

Define email templates that is going to be called from RewriteHistory
Sidekiq job.

Changelog: other

Sends a notification email when a placeholder
user reassignment is rejected by the source user.

Changelog: added

- better separation of concerns
- enables easier maintainability
- see https://gitlab.com/gitlab-org/gitlab/-/issues/466555

Sent when an Import::SourceUser rejects a reassignment.

Changelog: changed

The Metrics Dashboard (used for monitoring apps deploying using gitlab)
was deprecated in 14.7 and removed from the product in 16.0.
This commit cleans up a portion of the dead code.

https://gitlab.com/groups/gitlab-org/-/epics/10107

- Update copy of show page and HTML / text emails.
- Use CardComponent for UI.

Changelog: changed

New issue note mailer was not handling group level
issues.
Also refactored issue mailer specs so they are grouped

Changelog: fixed

Some code copied from
app/views/import/source_users/show.html.haml.

Small changes required for emails to work
for issues that exist at the group level and
not at the project level

Changelog: fixed

Removes the rate_limit_notification_emails feature flag

Changelog: added

This MR updates the post-completion email for direct transfer to
remove reference to the destination namespace. This is to avoid
confusion in cases where the same import contains targets multiple
destination namespaces.

- readability, maintainability, remove unnecessary service layer

Currently on token expiration mails are sent to only project
maintainers. With this change even project owners will receive
notification for upcoming token expiration

Changelog: changed

Increases the threshold from 500 to 1000. Also adds logging so we have
data on users that are rate-limited.

This MR triggers an email after a direct transfer enters any one of the
three final states. The email is sent to all owners on the parent group.

It is currently behind a derisk feature flag.

Change sentences like "Closed by Foo Bar via [MR id here]" to "Closed by Foo Bar
with [MR id here]"

Changelog: changed

This prevents delivery issues when users enable watch notification
levels on busy projects or groups

Changelog: changed