Here is a picture of the beta email, any emails other then this are SCAMS!
This is the real email, I know this because I have the game on my battle.net account.
Remember, you are most likely to have the game on your Battle.net before you recieve the email!
I got mine last night and the email this morning, so avoid scams!
I copy and pasted the email from my inbox to hide personal information.
Always check your battle.net before going to any links in emails first!