Hello, @cslackl1, you can create a technical workflow that queries every minute the delivery schema with these parameters:
With it, you query all the deliveries from campaigns that are waiting for delivery for more than 30 minutes. After that query you can use a javascript code to fill a variable with the names of the deliveries:
With it, you can use <%= vars.deliveriesPending %> in the alert. The workflow would look like this:
Hope it helps!