Frankly, somebody who sues over an ordinary message would almost surely get no damages, because the message has no commercial value, but if you want to stay strictly in the law, you should ask first.

This differs from ordinary applications that are not trusted to set the message context fields and instead inherit these from whatever values the queue manager deems appropriate.

If you don't know what to do with your hands, think about the message you want to communicate. As in ordinary conversation, your hands should simply help emphasize or reinforce your verbal message.