[JeremyNicoll]

I've raised a support ticket for this (the exposure of our primary email address).

I've suggested that at the very least the system should (if it's not going to give people a choice of the user under which the copy is sent) warn people that it will be done under the default username and give them a chance to cancel the send.

I hope I've made it clear that I think a choice of sending user would be better.