More Customizable Slack Notifications

We love Slack Notifications, and use them to alert us to a possible problem. But the current implementation is pretty vanilla. Would love to be able to apply our own message, and also tag users / channel.

This is what implements. I hope it will get merged in the next ~month.

In the meantime, you might be able to tag users/channels by updating the alert name to include them.

Awesome, thanks - I’ll have a play around with that, and then keep an eye out for #3137