While it is very convenient to have all mail available online and it is cheap (Google Mail offers a lot of storage for free), you might sleep better at night if you were sure to have a copy of you mail on your own hard disk drive at home. offlineimap is an open source python software available in most Linux distributions that does the job.
sudo aptitude install offlineimap
Edit the configuration file
~/.offlineimaprc and provide up your IMAP connection details:
[general] accounts = GMail maxsyncaccounts = 3 [Account GMail] localrepository = Local remoterepository = Remote [Repository Local] type = Maildir localfolders = /home/you/GMail [Repository Remote] type = IMAP remotehost = imap.gmail.com remoteuser = firstname.lastname@example.org ssl = yes maxconnections = 1 realdelete = no
Instead of the given config for the Repository Remote you can also use the template
type=Gmail (found in the annotated conf example).
[Repository Remote] type = Gmail remoteuser = email@example.com realdelete = no # The trash folder name is different from [Gmail]/Trash in the UK version of Gmail: trashfolder = [Google Mail]/Bin spamfolder = [Google Mail]/Spam # maintain 3 connections to the server at the same time (faster): maxconnections = 3
If you additionally provided the password using
remotepass = your_password after
remoteuser then you can set up the automated cron call using
00 23 * * * offlineimap -u Noninteractive.Quiet
To have a real backup of the mail (OfflineIMAP isn't) do an rsync:
rsync -a /home/you/GMail /home/you/GMail_Backup