To transfer mail from a backup or another Mac, you need to copy over
the following files. Be sure the permissions remain the same. Using
command line utilities such as cp -rp
and tar
should
preserve the attributes as much as possible.
For the folders, back up any existing version on the new machine, then delete the folders, before copying the data so no old files remain. The Preferences files can just be copied over any existing versions.
Make sure you shutdown Apple Mail and the other Apple apps before copying over