Redmine

Currently in the settings under "Select actions for which email notifications should be sent", if the "Issue updated" option is checked, an email notification is sent when an attachment is added to a issue.
However, if the "Issue updated" option is unchecked, and only sub-options such as "Note added" or "Status updated" are checked, then no email notification is sent when an attachment is added.

It would be beneficial to have a separate notification setting for adding attachments, independent of other options. This would allow users to receive notifications specifically for added attachments without having to enable unrelated options. By implementing this, users can that they receive notifications tailored to their preferences, even if the "Issue updated" option is not selected.