Add an email tempalte that will be used to send an email to
project maintainers and owners of inactive projects.

Changelog: added

Changelog: added

Previously, Users::InProductMarketingEmail was used to track sending of
track+series (onboarding) emails. Here, we update the model to
track campaign emails (e.g. Build iOS app guide email) and track+series
(onboarding) emails.

- Fix rubocop offences

- Add specs for html and text node
- Fix N plus one queries for new review email

Changelog: performance

Merge branch 'security-sirt_2167-revert' into 'master'

See merge request gitlab-org/security/gitlab!2339

Changelog: security

The experiment has been deemed a failure so we should clean up the code
that implements it.

https://gitlab.com/gitlab-org/gitlab/-/issues/345553#note_866018518

Changelog: removed

Changelog: changed
Issue: https://gitlab.com/gitlab-org/gitlab/-/issues/351293
MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/82801

Changelog: added

Changelog: added

Changelog: other

Account validation email will only be sent in EE.

When rendering Markdown in notification emails, we pass in the recipient
as current_user in the rendering context so that private references
visible to that user are rendered.

Without this change, only public references are rendered.

This also passes the issuable_reference_expansion_enabled option so that
it is rendered similar to how it is in the web UI.

Changelog: fixed

When receiving in-product marketing emails from GitLab,
a link is shown to invite members to perform specific tasks.

Changelog: added

A missing To header can cause issues with spam filters. And since we no
longer render job logs in these emails, generating these emails
individually isn't expensive anymore.

Changelog: fixed

Add Gitlab::Email::Message::InProductMarketingEmail::InviteTeam. This
email message is sent to a group creator 20 minutes after they create
the group to encourage them to invite their teammates.

When user's access request is denied and the user
has no access to read target group\project
then we shouldn't expose group\project name
in notification email.

Changelog: changed

Add an experiment for inviting members to certain
tasks from the in-product marketing emails.

Changelog: added

This reverts commit dc08481d to prepare for the fix.

This reverts merge request !69648

Make it clear where a default value is potentailly used
for `commit_email` or `notification_email`.

- update for consuming failure endpoints from Mailgun

Changelog: added

When using the `gitlab_rails['gitlab_email_subject_suffix']`
configuration option it was not applied to all emails. This
commits add the support for email_subject_suffix to
pipeline notification emails. As a consequence of this change
the project names placement is consistent with other email subjects.
The project name is now at the beginning of the subject for pipeline
emails aswell.

Changelog: changed

Issue: https://gitlab.com/gitlab-org/gitlab/-/issues/213383

- experiment params leaked into non experiment

Changelog: fixed

- adds goto action and preview text experiment.

Also renames alert's `with_issue` trait to `with_incident`

Revert "Merge branch '333562-setup-gitlab-mailgun-endpoint-for-syncing-bounced-invite-email6' into 'master'"

This reverts merge request !66397

- experiment successful

Changelog: changed

- update for consuming failure endpoints from Mailgun

Changelog: added

This reverts merge request !65078

- for use in notifying users about invite failures

Changelog: added