I am thinking it is probably time for Paysites to Educate the Surfers

[tigermom]

I think educating surfers is the right thing to do. You can't prevent people from using spam filters. Fact is, many email services have one in place that you may not even be aware of. Just saying something like: " please note that our reply emails may get blocked by any spam blockers you may have in place. If you don't see our confirmation email in your inbox, please check your spam folders", should do the trick.