Resolve dead link on feature page and missing documentation on "Create issue from email"
Problem
When looking at "Create issue from email" at https://about.gitlab.com/features/ the link is dead and there is no information available in the docs to support this feature.
There is some information that is quite valuable in order to get this feature working, as I found similar information in a similar section for merge requests https://docs.gitlab.com/ee/user/project/merge_requests/index.html#create-new-merge-requests-by-email
You need "Reply by email" enabled to use this feature. If it's not enabled to your instance, you may ask your GitLab administrator to do so.
This is the code position:
https://gitlab.com/gitlab-com/www-gitlab-com/blob/master/data/features.yml#L670
Edited by Dimitrie Hoekstra