Hi Mark. I'm not sure if I follow it. As far as I know your users already receive welcome e-mails sent from your e-mail upon registration, right? I mean, you have asked for it before, didn't you?
About the new feature request, it could be done but if you want it right now we can change the text for you until NAML editing is released. After that you can change it at your NAML module (it is available there at the moment).
Nabble staff. We never ask for passwords.