Option to disable "N alerts since X" emails

### Problem Statement

As a developer of a service, I'd like to get only emails about individual alerts, even if grouped by identical ones, so that I can flag each of them for investigation.

As a developer of a service, I'd like to stop getting emails that bundle different alerts 'since x', so I don't get emails about the same thing twice.

### Solution Brainstorm

Just add an option to disable "N alerts since X" emails.