gitlab-org--gitlab-foss/doc/reply_by_email/README.md

Reply by email

GitLab can be set up to allow users to comment on issues and merge requests by replying to notification emails.

In order to do this, you need access to an IMAP-enabled email account, with a provider or server that supports email sub-addressing. Sub-addressing is a feature where any email to user+some_arbitrary_tag@example.com will end up in the mailbox for user@example.com, and is supported by providers such as Gmail, Yahoo! Mail, Outlook.com and iCloud, as well as the Postfix mail server which you can run on-premises.

Set it up

In this example, we'll use the Gmail address gitlab-replies@gmail.com. If you're actually using Gmail with Reply by email, make sure you have IMAP access enabled and allow less secure apps to access the account.

Installations from source

1. Find the reply_by_email section in config/gitlab.yml, enable the feature and enter the email address including a placeholder for the reply_key:

   reply_by_email:
     enabled: true
     address: "gitlab-replies+%{reply_key}@gmail.com"
   

   As mentioned, the part after + is ignored, and this will end up in the mailbox for gitlab-replies@gmail.com.

2. Find config/mail_room.yml.example and copy it to config/mail_room.yml:

   cp config/mail_room.yml.example config/mail_room.yml
   

3. Uncomment the configuration options in config/mail_room.yml and fill in the details for your specific IMAP server and email account:

   :mailboxes:
     -
       # IMAP server host
       :host: "imap.gmail.com"
       # IMAP server port
       :port: 993
       # Whether the IMAP server uses SSL
       :ssl: true
       # Email account username. Usually the full email address.
       :email: "gitlab-replies@gmail.com"
       # Email account password
       :password: "[REDACTED]"
       # The name of the mailbox where incoming mail will end up. Usually "inbox".
       :name: "inbox"
       # Always "sidekiq".
       :delivery_method: sidekiq
       :delivery_options:
         # The URL to the Redis server used by Sidekiq. Should match the URL in config/resque.yml.
         :redis_url: redis://localhost:6379
         # Always "resque:gitlab".
         :namespace: resque:gitlab
         # Always "incoming_email".
         :queue: incoming_email
         # Always "EmailReceiverWorker"
         :worker: EmailReceiverWorker
   

4. Find lib/support/init.d/gitlab.default.example and copy it to /etc/default/gitlab:

   sudo cp lib/support/init.d/gitlab.default.example /etc/default/gitlab
   

5. Edit /etc/default/gitlab to enable mail_room:

   mail_room_enabled=true
   

6. Restart GitLab

   sudo service gitlab restart
   

7. Reply by email should now be working.

Note: If you're running GitLab in development mode and using foreman, make sure to also uncomment the mail_room line in your Procfile.

Omnibus package installations

TODO