Gmail Backup – the ultimate one-click solution for doing backups of your GMail account.
Using this easy to use handy tool, you can backup all your mails in the gmail account as .eml files in to a local folder. The latest version is GMail Backup 0.107, which can be downloaded from the Gmail Backup website.
You can also perform an incrimental backup, which only backs up the mails from the given date.
Nice tool 
