Hi, What are the rules for how often Signoz sends alert-email? For example, I have the alert below. According to this alert we have the following questions: • Does the system wait 5 min before it sends the next alert-email (according to setup "during the last 5 min")? Or does it check and sends every 1 min - according to option "Run alert every 1 min"? • Or does the threshold needs to go down to 0(zero) before it sends the alert again? Please give us some more information on how this works. And if you have some documentation about this.

When a condition is met, a notification is delivered. If the alert is in firing mode continuously, no new notification will be sent until the next 4 hours (unless there is a change in the result series). If the alert is still firing after 4 hours, another notification will be sent. This cycle repeats assuming alert is in firing mode always. However, if alert resolves, then it goes into firing mode, a new notification will be delivered because it's a new alert this time. I hope this clears it.

Yes, great. Thanks! So the setup "during the last 5 min" is for "new firing alerts - or if the alert is not firing for a while and goes firing again? But how about the setup "Run alert every 1 min"? Does this check every 1 min if the alert is firing (and if so sends an notification) or what does this mean?

Regardless of the status of alert (firing or not firing), the check runs every minute. This is because the status can change any moment and it has to make sure to updated the alert status so it runs at least every minute.