I don't think Heliotrope sends confirmation emails. Not everyone does, though it's awfully nice when they do, isn't it.
I feed my sub fretting by watching the stats on dutrope--
http://duotrope.com Not everyone who subs reports to duotrope, of course, but sometimes you can get a good idea of whether a market is actively responding, or maybe sitting on a pile of subs, or what. It also lets you know what the current average return times are, so you can put a limit on the fretting. I find it useful, anyway.