My girlfriend is having problems with Mail - it has stopped recording her sent emails, in all her accounts. I've tried deleting the prefs file, but this didn't work. I'm now thinking to delete the mail app and associated files altogether, and then re-install it from scratch. But not 100% sure how to do this. What files and folders do I need to trash? And how can I re-install mail. Where do I find the files. I remember hearing that I can extract the program installer off the install DVD. All help appreciated.