I've registered for 5 email accounts successfully, one of them office 365 (I have pro version). I tried to registered another office 365 email, but it keeps erroring out. When I use bluemail (free) with same used id and password, it just works fine. In bluemail, there is a separate option for office 365 apart from exchange, while in aquamail, it groups office 365 and exchange under same category. Why would this be happening?