Advanced invitations system fully integrated with SMF. Based on a credit system and with a lot of powerful features this is the ultimate way to get more users in your forum.
Email Invitations:
Quickly send invitations with keys thought forum interface.
Advanced Credits:
Give credits based on Karma, Posts or Days since registration.
Restrict Registration:
Force key, key as optional or disable key on registration.
Secure Keys:
Keys are generated with an unique id so uninvited guests can't get a valid key.
Expiration Date:
You can set for how many days each key is valid.
Log Invitations:
All actions made related with Invitations are automatically logged and showned on administration. It can be disabled.
Compatibility: SMF 2.0.x (All the 2.0 branch is supported since RC5).