I made a fresh install on my new Macbook Pro with OS X 10.5.2 What is the most simple and safe way to import al my mails / mailboxes and mailsettings from my old machine with OS X 10.4.11?
You email file in Apple's Mail application is kept in the folder /YourHardDrive/Users/YourUserName/Library/Mail/ . Plus if you do an Archive & Install it will be almost the same as a complete wipe but hold some Network and applications.