Ipad 2 mail app will not open

My mail app on my Ipad stopped working yesterday. The icon at the bottom of my home screen is keeping track of my new e-mails, but when I tap it to open it, the issues begin. It opens to the icons (forward, write a new e-mail, etc) at the top of the page, with a blank screen. It stays that way about 15 seconds, then the screen turns black for a few moment, then goes back to the home screen. I have tried deleting and re-adding both e-mail accounts (hotmail and msn),. The first time I attempted to re-add outlook (hotmail) it didn't work, then I tried to just add it as hotmail (without outlook) and it said I needed to get something from microsoft.live.com (or something like that). Third times a charm,it added in outlook. I also restarted the ipad, and reset it (in the general settings) and nothing seems to work. If it weren't counting the incoming e-mails, I would saying it might not be communicating, but, it is.. Any ideas what to do next.