Excessive email storage showing! Help!

[rut3556]

Ok, here's the deal. When I go into my "usage" setting on my 4S it's showing my email as taking up 7.1 GB! Since I have no emails in storage how can that be? I pretty much delete them as I read them. Others I know are using up about ~300-400 MB compared to my 7.1 GB. I am at a loss to explain this and thought I'd ask the question here before going to the Verizon store. It's as though every email I ever sent or received is still resident on my phone. Any ideas would be appreciated.

Tnx... RUT