Originally Posted by official website
Closed Beta Testers - First of all, if you were a Closed Beta Tester, you have received an email informing you that you are already registered for our Early Access Beta and DO NOT need an Early Access Beta Key. However, every Closed Beta Tester is also given FIVE Early Access Beta Keys to give away. So if you know a Closed Beta Tester, ask them for a key.
so there ya go.. people who get emails should also be getting 5 extra keys for friends.