Some of us aren't lucky enough to have a volunteer to do this.

Anyway sounds cool, I'll work on it.
I figure it goes like this:
If activation is required, do it after activation; if not, do it upon registration.
Make it an option in the Admin CP (so you can turn it off temporarily if you want to).
Do the email as a template.
Yes/no/maybe? I'll start on it...go ahead and feedback.