Gmail as we all know a short form for Google Mail is one of the products of Google INC. In the race of email clients Gmail is coming up with more and more abilities which has attracted millions of users from other mail accounts like yahoo, msn. They have introduced much extra features through lab features which are presently in testing stage but users can still use it .You can view and enable them from the tab which appears in right most corner of the gmail.
The latest lab feature is the ‘offline gmail’ – to access gmail from computer,which ultimately gives the power to download all or selected gmail mails or messages to your pc for the offline use. Offline Gmail is still an early experimental feature
How to enable Offline Gmail