Yesterday I backup my Evloution mails from my office hdd to home hdd.
Shutdown evolution and gconftool-2:
$evolution --force-shutdown $gconftool-2 --shutdown
You need to backup this directory.
~/.evolution/
~/.gconf/apps/evolution/
~/.gnome2_private/Evolution
Create a tar.gz
$tar -cvzf evolution-backup.tar.gz .evolution .gconf/apps/evolution .gnome2_private/Evolution
To restore, use:
$gconftool-2 --shutdown $evolution --force-shutdown $tar xzf evolution-backup.tar.gz $gconftool-2 --unload evolution_setting.xml $gconftool-2 --load evolution_setting.xml