Offline Gmail graduates from Labs

Huh. I must've missed this the first time around. Gmail's handy-dandy offline feature, which allows you to read and send gmail messages while offline, is finally a full-fledged feature, no longer to be found in Google Labs:

http://gmailblog.blogspot.com/2009/12/offline-gmail-graduates-from-labs.html

I believe it requires you to install Google Gears on your computer, or else you could use Google's Chrome browser.

If you're not familiar with GMail's labs extensions, login and checkout this link to find some useful additions, like the ability to unsend an email, store boilerplate canned messages, watch embedded YouTube links from within an email message, send and receive text messages (SMS) in Chat, move the chat box to the right side of the screen, and more.