I'm sure I've seen this before but I can't for the life of me find a thread about it here or even searching online. I use Mail.app to connect to my gmail account through IMAP. I would like to be able to back up that mail locally so that I have an offline copy of everything available as well. What I've done in the past is just drag and drop everything from the IMAP folders onto a folder on the local harddrive, but this is cumbersome and a little irritating. On top of that I've had a strange issue where if I copy my mailbox to another computer, (or after reinstalling things for Snow Leopard) it resurrects some emails incorrectly, without appropriate metadata like to/from/subject, etc. Just the body of the email is there. It only does this for a handful of messages but it's got me feeling like I'm doing something wrong. I'm sure I've read some sort of software howto on TUAW before but I can't find the entry now and it's driving me crazy. So is there a correct way to do this or is the easiest method just dragging and dropping messages all the time?