Using the MAIL application, iTouch will not send or forward..

This is so weird. I have been using Safari to do email by accessing the webmail version of my email and entering passwords. Today however, I realized I could tap the MAIL icon on my iTouch desktop enter in my mail account and password and it would automatically store it-- and then access it for me by just hitting the button. The weird thing is though, I cannot reply or forward using this application. It allows me to create a reply and a forward, but when I hit "send" it simply dissapears from the screen, never to be seen again. I even tried sending myself messages using it and it does not work. Strangely, when I use Safari and laboriously type all the information, it does work. But not in the MAIL app.

How can this be fixed? This can't be normal.

Thanks for your advice!!