Documents for new issue by email
We have a great document for reply by email, and we should probably have another entry for new issue by email, or update the document accordingly to mention new issue by email.
The same instructions as here works and is required for setting up the new issue by email functionality: https://docs.gitlab.com/ce/administration/reply_by_email.html#email-sub-addressing
- the email address configured needs to include the '%{key}' placeholder for new issues by email to work
- You'd need access to the web UI for the first time to get access to that email address. it's a unique address per user to prevent spam.
- the email address is unique mainly due to that it's implemented with a special token belong to each person. since email address could be forged, we use that token to identify users rather than using the email address
- enabling reply by email is not necessarily to enable email-sub-addressing, but is needed if you want to create new issues from the email