Google Gears-grabs your stuff when offline

DOWNLOAD HERE

Install into Firefox or Internet Explorer 

and this extension will grab your emails

even if you are offline and store them on your computer.

Go into your GMail settings>Offline>Click "enable offline mail for this computer"

it will see that Gears is installed and synchronize your mail with the server and download the messages to your hard drive.

How do I access my email while offline?

To get to your mail when offline, simply open a browser and type "gmail.com" into the URL bar or use the desktop shortcut.

You can send mail while offline-it will hold it and as soon as you are connected again it will transmit...same for receiving the mail....great for travellers on airplanes etc....

Try it and see if it works for your needs.