Hey, Travis,
Just checked, Email for your post came in fine. I'm on a 8.9 tablet. Used to get little notifications in lower right corner of this thing, didn't this time. Doesn't bother me. When I first turn-on tablet, after boot it'll give me notifications of accumulated Email. I don't think the problem is at your end, my Email instant notifications stopped on my smartphone as well, and it uses a different Email account.
I received a notice from AT&T a few days ago about network changes/upgrades, and assumed it was their cause...
Thanx