BuddyPress.org

@zlamczyk: I think we are trying to work on the same thing.
https://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/disable-activation-email/

I am getting spammed (bad) and they are simply using the activation email to approve themselves. My thought was just do a manual approval to either “activate”, “send activation email” or “delete from wp-signup”.

I have modified manual member approve for BuddyPress so I can see the signup table and manually approve members.
http://mattkern.com/wpmu-manually-approve-new-members-on-local-install/

I just need to stop the automatic sending of the activation email. Do you know how?

I’ve simply tried commenting out the following line in wp-core-signup.php to test, but it’s not working.
wp_mail( $to, $subject, $message, $message_headers );

This is the function; but for some reason the activation email still goes out.