Alarm Pipeline Health Monitoring

Yesterday I found the alarm pipeline had 217 alarms in waiting, because an expression block in the pipeline (which has never been used) was holding things up. I deleted the expression block and verified that new email alarms were being sent out normally.

However, it got me thinking about how to monitor the alarm pipeline health. Right now, I just have a midnight test alarm email generated every night. What are other users doing to monitor their alarm pipeline health?