noreply@Blizzard.com real?

Answer 1

most likely not

its possible to send a fake email that shows the correct address.

best way to tell is mouse over but no not click on a few of the links in the email and look closely at the addresses that come up, you will sometimes see a random address, or say they could slip in an extra "I" its discreet but if your looking for it, shouldnt be too hard to tell its fake