Cannot send or receive email.

I have version 7.0.264320 and I cannot send or receive email. I have a web based email provider.,and all was fine,until just a few days ago.My diagnostic test says all is fine. It says it is syncronizing the email folder ,but it never does anything . 

Ok I just updated it to 7.0.26567.0 and it is still doing the same thing. Left the program opened and it just sits there doing nothing

i fixed this problem by doing a restore of one of my backups. All is working now