Resubmitting a message from dead letter queue - Azure Service Bus

You'd need to send a new message with the same payload. ASB by design doesn't support message resubmission.

We had a batch of around 60k messages, which need to be reprocessed from the dead letter queue. Peeking and send the messages back via Service Bus Explorer took around 6 minutes per 1k messages from my machine. I solved the issue by setting a forward rule for DLQ messages to another queue and from there auto forward it to the original queue. This solution took around 30 seconds for all 60k messages.