Mail usage high at 3GB?!

Hi,

I have 3 email accounts on the phone, one of which is iCloud. Trying to figure out why I have 3GB of usage I proceeded to empty the inbox/sent/trash of all the 3 accounts and either deleted/empty trash all msgs or move to iCloud archive but nothing changed. The only folder with msgs that I see is the Icloud archive which is set to be on the server. Fine except that on the Icloud server I only have 233MB of usage, which is not on the phone at all or anymore if I understand correctly.

So where is this 3GB of usage coming from?!

Thx!