Is this a legit email from blizz?

I received this in my primary ISP email acct and I'm just wondering if this is a legit email as I didn't think Blizz would ever delete inactive accts.

Greetings!

In order to make our servers more efficient, we are
taking the time to remove inactive accounts. We are mass
mailing all email
addresses registered to World of Warcraft accounts to target those that are
inactive. If
you are currently active in the World of Warcraft, or plan on
picking up where you left off the in the future,
please continue reading. If
you do not foresee yourself ever rejoining us, please disregard this message.


Please take a moment and login to your Battle.net Account to
verify and maintain your enjoyable gameplay experience:
Removed

Login to your account, In accordance following template to verify your
account.

* First Name
* Last Name
* Secret Answer
Show * Please enter
the correct information

Thank you for your time and attention to this
matter, and your continued interest in World of Warcraft.




Sincerely,

Account Administration
Blizzard
Entertainment
http://www.blizzard.com/support/

World of Warcraft , Blizzard Entertainment 2010