Email alert functionality for system health
Email alerting is not well documented and not very inclusive.
I recently experienced an issue where services were crashing as a result of VAR running out of disk space.
Both of those seem like very alertable events: low disk space should trigger an e-mail as well as service termination/ not starting.
General system health and function alerts should be tied to the notification system
Ideally, these would be configurable. email configuration does not really allow for alert customization.