Every time Time Machine backs up my drive it creates a 5.6 gig file even if I backed up just 10 minutes ago. It looks like the inbox.imapmbox folder is getting backed up every time. How can I avoid this?
Also since the email account is IMAP you don't need to back it up anyway. Everything stays on the server. So essentially if you lost everything, you just reconfigure your IMAP account in Mail and it will pull everything down again.