Nice feature which wanted for so long.
Still beta version, yet I feel it is just nice for me to store my Gmail locally and browse my attachment during offline.
How to enable it ?
Login your gmail now, right top corner find the Lab logo or word,
Find Gmail Offline features and enable it.
Then you will get a Gmail offline shortcut created on your desktop.
Sync your Gmail ( means to download your email to your local drive )
Might take up sometimes.
