All alerts list with timestamps of last time the alert was triggered

Greetings All,

I am looking to get a report / a list of all the alerts and the last time they were triggered so that I can proceed with a cleanup (unmanage / delete) all those that have not triggered in a while. The custom reports that are available do not provide this info.

Appreciate your assistance with this.

Thanking you in advance.

Kind regards,

AND