Dave, when did you submit? If it was prior to January 1, 2015, please query to the submit@ address immediately and we'll check whether it went down the email wormhole. If it was after that, you should get a response of some sort (either a rejection, or final-round bump notice) around 2-4 weeks after you submitted.
And yeah, the Submissions Grinder is awesome, and I can't recommend it highly enough.