Idle System Alert - Not alerting

I have ‘Idle System Alert’ set to 15 mins and ‘Alert on Stale’ enabled.

For the last two days I have had a “2 day Gap”, but I did not receive any alerts.

Is there anything else I need to set to receive alerts?

The last idle alert was emailed to mjy***@*** on 2024-04-03 UTC and 2024-03-24 UTC corresponding to the last two gaps.

Check your spam folder.