I'm planning a new system heavily reliant on MQ (unknown implementation at this time). Most of my MQ experience is IBM MQ Series and OS/400's data queues but in nearly every case we polled the queues, or wrote a broker to poll and deliver.
There are lots of MQ systems out there now. Instead of writing a broker to poll and deliver, are there any MQs out there which will send (and retry &c) the message as an HTTP (POST) payload "out-of-the-box?"