All email submits scrub pretty heavily. Is it possible that ours are scrubbing more than that from other networks? I would say it's possible, because most of our email submits allow incentives (at least soft-incent, on our gateway) and the way an email submit works is that they scrub however much is needed to make it profitable. That said, I know our advertisers profit well from our submits, and some even guarantee us at least a certain conversion rate.
Try some of the non-incent offers though, which we'll be adding more of soon.
We also have some no-scrub offers, but these convert on the 2nd page, not the first.
phatzilla, i'll have that offer checked on, to see how it's performing for our other publishers.