| Due issue | Participants and Custom notification level with this event selected. |
| Failed pipeline | The author of the pipeline. |
| Fixed pipeline | The author of the pipeline. Enabled by default. _[Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/24309) in GitLab 13.1._ |
| Issue due | Participants and Custom notification level with this event selected. |
| Merge merge request | |
| Merge when pipeline succeeds | Author, Participants, Watchers, Subscribers, and Custom notification level with this event selected. Custom notification level is ignored for Author, Watchers and Subscribers. _[Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/211961) in GitLab 13.4._ |
| Merge request [marked as ready](../project/merge_requests/drafts.md) | Watchers and participants. _[Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/15332) in GitLab 13.10._ |
| New comment | Participants, Watchers, Subscribers, and Custom notification level with this event selected. Also anyone mentioned by username in the comment, with notification level "Mention" or higher. |
| New epic | |
| New issue | |
| New merge request | |
| New note | Participants, Watchers, Subscribers, and Custom notification level with this event selected. Also anyone mentioned by username in the comment, with notification level "Mention" or higher. |
| Push to merge request | Participants and Custom notification level with this event selected. |
| Reassign issue | Participants, Watchers, Subscribers, Custom notification level with this event selected, and the old assignee. |
| Reassign merge request | Participants, Watchers, Subscribers, Custom notification level with this event selected, and the old assignee. |
| Remove milestone issue | Subscribers, participants mentioned, and Custom notification level with this event selected. |
| Remove milestone merge request | Subscribers, participants mentioned, and Custom notification level with this event selected. |
| Remove milestone issue | Subscribers and participants mentioned. |