How to Register Facebook Email Address?

Want to know how to get / register a facebook email address? 

Have you received invitation from facebook for creating the email address? 

What? facebook email invitation? .... kind of Gmail invitation in the early day??

take a look at this... 

Facebook Messages' email integration is rolling out on an invite-only basis; you can sign up here.

To know more about Facebook Email click here (what is facebook email)

Click here for Why I Shouldn't Change / Switch My Email to @Facebook.com