BB Bold :: Email Folder Missing From Start Screen?

i was navigating with my phone the other day and i think the battery was low. Everything was running very slowely and somehow i accidentally deleted the first mail folder on the start screen. I can't remember what that folder was called but it included all the email addresses that i have plus messages as far as phone messages...it was a sort of summary folder i think. So is there a way to restore it? I didn't see that i was deleting or moving. Just saw the results of the folder not being present anymore.

The other problem that has existed since i have had this phone is that two of the email addresses never show the emails. If i go into the folder it says simply *no messages* and yet there is at the bottom of the screen what you see in the attached image....that there is a message. Plus at the top there is a little notification icon saying the number of unread messages.