2017-09-12 15:41:55 +00:00
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# Dealing with email in development
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## Sent emails
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To view rendered emails "sent" in your development instance, visit
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[`/rails/letter_opener`](http://localhost:3000/rails/letter_opener).
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2019-07-10 19:40:28 +00:00
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Please note that [S/MIME signed](../administration/smime_signing_email.md) emails
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2019-08-26 20:31:04 +00:00
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[cannot be currently previewed](https://github.com/fgrehm/letter_opener_web/issues/96) with
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`letter_opener`.
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2017-09-12 15:41:55 +00:00
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## Mailer previews
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Rails provides a way to preview our mailer templates in HTML and plaintext using
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dummy data.
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2020-04-21 15:21:10 +00:00
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The previews live in [`app/mailers/previews`](https://gitlab.com/gitlab-org/gitlab-foss/tree/master/app/mailers/previews) and can be viewed at
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[`/rails/mailers`](http://localhost:3000/rails/mailers).
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2020-04-08 03:09:31 +00:00
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See the [Rails guides](https://guides.rubyonrails.org/action_mailer_basics.html#previewing-emails) for more information.
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2017-09-12 15:41:55 +00:00
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2018-03-02 11:32:39 +00:00
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## Incoming email
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1. Go to the GitLab installation directory.
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1. Find the `incoming_email` section in `config/gitlab.yml`, enable the
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feature and fill in the details for your specific IMAP server and email
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account:
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2019-07-09 07:16:17 +00:00
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Configuration for Gmail / Google Apps, assumes mailbox `gitlab-incoming@gmail.com`:
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```yaml
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incoming_email:
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enabled: true
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# The email address including the `%{key}` placeholder that will be replaced to reference the item being replied to.
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# The placeholder can be omitted but if present, it must appear in the "user" part of the address (before the `@`).
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address: "gitlab-incoming+%{key}@gmail.com"
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# Email account username
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# With third party providers, this is usually the full email address.
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# With self-hosted email servers, this is usually the user part of the email address.
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user: "gitlab-incoming@gmail.com"
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# Email account password
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password: "[REDACTED]"
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# IMAP server host
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host: "imap.gmail.com"
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# IMAP server port
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port: 993
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# Whether the IMAP server uses SSL
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ssl: true
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# Whether the IMAP server uses StartTLS
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start_tls: false
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# The mailbox where incoming mail will end up. Usually "inbox".
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mailbox: "inbox"
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# The IDLE command timeout.
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idle_timeout: 60
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# Whether to expunge (permanently remove) messages from the mailbox when they are deleted after delivery
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expunge_deleted: false
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2019-07-09 07:16:17 +00:00
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```
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As mentioned, the part after `+` is ignored, and this will end up in the mailbox for `gitlab-incoming@gmail.com`.
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2018-03-02 11:32:39 +00:00
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2018-03-21 02:33:28 +00:00
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1. Run this command in the GitLab root directory to launch `mail_room`:
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2018-03-02 11:32:39 +00:00
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2020-01-30 15:09:15 +00:00
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```shell
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bundle exec mail_room -q -c config/mail_room.yml
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```
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2018-03-02 11:32:39 +00:00
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1. Verify that everything is configured correctly:
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2020-01-30 15:09:15 +00:00
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```shell
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bundle exec rake gitlab:incoming_email:check RAILS_ENV=development
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```
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2018-03-02 11:32:39 +00:00
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1. Reply by email should now be working.
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2018-04-09 09:39:03 +00:00
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## Email namespace
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2020-02-12 03:08:55 +00:00
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As of GitLab 11.7, we support a new format for email handler addresses. This was done to
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2019-01-08 00:12:59 +00:00
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support catch-all mailboxes.
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2018-04-09 09:39:03 +00:00
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2019-01-08 00:12:59 +00:00
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If you need to implement a feature which requires a new email handler, follow these rules
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for the format of the email key:
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2020-02-12 03:08:55 +00:00
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- Actions are always at the end, separated by `-`. For example `-issue` or `-merge-request`
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- If your feature is related to a project, the key begins with the project identifiers (project path slug
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and project ID), separated by `-`. For example, `gitlab-org-gitlab-foss-20`
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- Additional information, such as an author's token, can be added between the project identifiers and
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the action, separated by `-`. For example, `gitlab-org-gitlab-foss-20-Author_Token12345678-issue`
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- You register your handlers in `lib/gitlab/email/handler.rb`
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Examples of valid email keys:
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2019-09-18 18:06:14 +00:00
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- `gitlab-org-gitlab-foss-20-Author_Token12345678-issue` (create a new issue)
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- `gitlab-org-gitlab-foss-20-Author_Token12345678-merge-request` (create a new merge request)
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- `1234567890abcdef1234567890abcdef-unsubscribe` (unsubscribe from a conversation)
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- `1234567890abcdef1234567890abcdef` (reply to a conversation)
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2019-01-08 00:12:59 +00:00
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Please note that the action `-issue-` is used in GitLab Premium as the handler for the Service Desk feature.
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### Legacy format
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Although we continue to support the older legacy format, no new features should use a legacy format.
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These are the only valid legacy formats for an email handler:
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2019-07-09 07:16:17 +00:00
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- `path/to/project+namespace`
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- `path/to/project+namespace+action`
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- `namespace`
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- `namespace+action`
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2018-04-09 09:39:03 +00:00
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Please note that `path/to/project` is used in GitLab Premium as handler for the Service Desk feature.
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2017-09-12 15:41:55 +00:00
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---
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[Return to Development documentation](README.md)
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