Conditionally select alert notification channels

[nblumhardt]

We have Seq alerts setup with a Notification Channel (in our case, Microsoft Teams). We have two channels in Teams: a Production Errors channel and a Test Errors channel.

Currently, we have two Seq alerts setup so that we can identify and send to the correct Notification Channel based upon the Signal (e.g. Errors in Test go to the Test Errors channel. The where clause is the same though, so it is duplicated between both Seq alerts.

Is there a way to setup one alert, but conditionally choose the Notification Channel based upon the event? For example, if the event came from Test, it would only go to the Test Errors Notification Channel? This would cut down on the duplicate alerts we are currently setting up.

Originally posted by @ryanbuening in #2003