Hi,

Is there a way to send a single message to all your friends at once?
I'm about to do a name change, and i just want to let them know.

ThX

no its not possible to message multiple users at the same time
already been suggested also and denied

You will simply have to send every one of your acquaintances a message one by one kind Clayman213 sir letting them know your business. You can try creating a personal blog about it too.