I have a similiar problem as well. I have the ARIA and its awesome!! it worked fine and I synced my yahoo account and Hotmail account with the HTC mail app and all was well and then it wasn't. All of a sudden it wont sync my mail anymore. I will switch between email account and it will say NO MAIL. It kept giving me errors about the outgoing mail server settings being wrong but I never touched them. I cant view my mail at all!!!!!! I can go to the gmail app and there they are but what the hell?????????????????? Anyone have a fix?