Congratulations. That seems like an acceptance to me. Has everyone who has been accepted received this? I haven't and its making me so nervous. Nothing in the mail as of yet and no update on the status checker. I pray that I'm at least wait-listed.
I'd be willing to bet large sums of money that it means yes, you have been accepted. I received both my acceptance packet and the e-mail (packet came with Saturday's mail, e-mail came at 5:03 PM today, according to my Gmail account), and the "You're the 1 We Want" slogan seems to be their acceptance theme. Your letter is probably either in the mail as we speak, or it has been lost. A safe choice would be to call the admissions office tomorrow just to make sure; they may have to forward you a new packet, or they can clear up any unanswered questions about the mysterious e-mail.
kyleoXD: There's still hope, it isn't April 1st yet, now is it? Also bear in mind that if you aren't one of the students who receives an email (not sure who does and does not), you could potentially receive a decision by mail after April 1st. If they mailed it out on the 1st, you'd receive it a couple of days later.