BuddyPress.org

Like I said, at this question on the WPMU forums / search on the WPMU forums.

Back when BP was pre-beta, I used to use the following code on a test installation. I post it here just to try to counteract this notion that it is “impossible” to change the welcome text email. Please note I am not supporting this code and I’m not even saying that it will still work. YMMV.

http://buddypress.pastebin.com/f284e0aab