Metropol

One of Gmail’s most requested features – offline support – is now available in testing. In other words, you can now use Gmail without an Internet connection, just like you can with desktop mail clients like Outlook.
Cont.

Bloody handy for me. Often I'm away from my main computer for a few days, so being able to pre-write emails etc would be bloomin' handy.

Found this very useful. 22 cunning Firefox extensions for Gmail.

http://speckyboy.com/2009/04/13/22-fire ... geability/