Alert does not trigger email notification

[wagnerand]

I recently created an alert (https://sql.telemetry.mozilla.org/alerts/78). It never triggered an email notification, despite the alert matching the conditions. What could be wrong?

[jezdez]

I've been trying to work out what's going on here, and only was able to find a solution for the visual glitches of the alerts page, not actually why this isn't triggering.

One caveat I found in the Redash docs about Redash v9 alerts (the one we run in production) is that it doesn't work with queries with parameters and there is an issue upstream already to warn users about that (getredash#4513). At this point I would suggest to see if the alert triggers if you remove the parameter again. Please let me know if that helps.