Thank you for your feedback.
Today you can see messages which are “pending” in a queue through Message Trace feature. In the Mail flow Dashboard, you can see messages queued for more than an hour. We’ve also created alerting for this condition. Can you tell us what other things you need and what the scenarios look like / how commonly you need to perform the task?
This would help us when evaluating this item further.Kuba Ober supported this idea ·Kuba Ober commented
It's somewhat ridiculous that this isn't possible. Come on, even the most basic MTAs have this feature.