1. First of all login to your Gmail Account.

2. On the upper left hand side you will see a Gear Icon click on it. Now a drop down menu opens. Click on ” Settings
3. Now the page refreshes and you will see another page with a set of options on the top saying General, Labels, Inbox, Accounts etc. There is an option saying ” Offline “. Click on that.
4. Now click on Install Gmail Offline. A new tab will open .
5. Click on ” Add to Chrome ” button. It will ask for confirmation. Click on Add.
6. An icon of Gmail Offline will be added to the Chrome App Page.
7. Whenever you need to use Gmail Offline. Then go to the Chrome App Page and click on Gmail Offline while you are logged in.

Alternative method to install / use Gmail Offline

Simply open this link : Install Gmail Offline and you will get the Gmail Offline Extension Page. Click on Add to Chrome. And then Confirm by clicking on add.

Now Gmail will sync your PC with your Gmail account allowing you to use Gmail While you are offline and will save your data.