BuddyPress

Hi! How can i only allow people to add friends on the network if they either hhave their personal email address or if they are referred by another friend on the network?
Is there a plugin for this or is there anyone who’d be willing to custom develop it?

http://wordpress.org/extend/plugins/invite-anyone/ works in current BP/WP versions.
and/or http://buddydev.com/buddypress/buddypress-friends-suggestions-widget-help-your-users-to-build-their-network-faster/

If you want to completely disable public registrations, and only want to set up a invite only BuddyPress community, check out this plugin as well: http://wordpress.org/extend/plugins/wordpress-mu-secure-invites/

Should work in combination with the plugin Mercime mentioned

@Bowromir the last time I used Secure Invites on test install a year ago, my test users had to reset their passwords when I disabled it to test another invite plugin. Do you know if that behavior has changed in recent versions?

Good question.. I have only use in for a client project once (8 months ago).. It worked fine, and have not heard about these problems.. But they might still have it enabled so the problem is not popping up. I need this plugin soon, so then I’ll find out