<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=338926) </details> <!--IssueSummary end--> ### Proposal Currently we have https://docs.gitlab.com/ee/tools/email.html to manually send emails to GitLab users. I think it would be nice if there was an API endpoint for that as well. In the concrete case we'd like to leverage that to send out custom email to users from pipelines.