I could see there being a hole in the system regarding e-mail for notifications. Maybe this could be solved with a notification system in the wallet. The only e-mail service I could see that would be able to handle this platform security-wise would be Lelantos (
http://lelantoss7bcnwbv.onion).
Yeah, I thought the secure wallet communications and file sending capabilities were a prerequisite for OneMarket for that reason.
Man, if this stuff gets built and works... it is going to so HUGE.