get a new email addy and re-register with e-bay. After all most people use a throw away email so that they can get away with it. As for the blocked senders list that has absolutely nothing to do with emails that you send and you can edit it anytime. Personally I will not use ebay or anything similar because it is so open to abuse. Better to use a good company in the long run. You stated that the last person you brought something from was in your blocked senders list so why buy from someone you previously thought dodgy.