Did you only get the first email? When you efile you get back 2 emails. The first email only confirms the transmission. The second email says if the IRS (or state) Accepted or Rejected your efile. Check back though your emails and spam/junk folder.
You will have to print and mail it now. Did you have a refund and never noticed you didn't get it? Or did you have a Tax Due? Did you pay it?
