Quote Originally Posted by Nix View Post
They're not censoring your email account, they're censoring people opening their mouths about alpha and receiving an invite to the alpha is classed as information about alpha. Pretty much everything alpha-related after you send in your app is top secret. I can't find ARR's NDA for the life of me (I'm sleepy as sin and still lots of work to do, so I'm extra dopey right now), though the clause was there for the 1.0 alpha (oops, there's me opening my big mouth!). You'll notice the whole lack of people talking about if they're in alpha - because of the NDA. Take it as a rumor if you will, but we know otherwise~
Alpha site:
As stated in the “FINAL FANTASY XIV: A Realm Reborn Tester Agreement,” testers are prohibited from publicizing any proprietary information related to the Alpha Test on external sites. In the event that we confirm that infringement has occurred, your rights to be a tester will be revoked and your FINAL FANTASY XIV account will be suspended.
We will announce if and when Alpha Test-related details can be publicized, so please take great care in their handling until they have been made public. For feedback and discussions between testers, please use the dedicated tester forum, which will open at a later date.

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As Exn said, whether or not you got an invitation is not a proprietary information. What they mean by proprietary information is any information that they own rights to, that is, any content from alpha. Saying you got an invite, or even if you accept the invite and are playing alpha is not violating the NDA, that's just a rumour.