I have no personal experience of AM - but everything I have read about it says that they did not require email validation of this sort.
776 karma · joined September 4, 2013
This is sad news - I should have supported it better when it existed - I'll miss it when it is gone!
I'm biased and MessageSight has existed a lot longer so it's not fair to compare them but if people want to see numbers our performance report is here: http://www-01.ibm.com/support/docview.wss?uid=swg24035590 (that report is for 1.1, the equivalent for 1.2 released a couple of weeks ago isn't out yet).
Good luck and a fair wind to everyone in the MQTT space!