I have an HTC Droid Eris, and am curious about the different email apps that came pre-installed. What exactly is the difference between the Mail app and the Gmail app (other than the obvious fact that Gmail only caters to Gmail accounts)? The only email account I use is a Gmail one - is there an advantage to using one over the other for me? I also noticed that the Mail app starts automatically, even if for now I'm not using it at all.