Gmail Offline app is available for Google Chrome browser only. You cannot use Firefox, Safari, Internet Explorer or Opera for this app. To install Gmail Offline app, follow the link below:
After first start-up, Gmail Offline will automatically synchronize messages and an Internet connection is required. So you can access your email next time offfline.
To install Gmail Offline app, follow the link below:
Congratualations, now you are using Gmail Offline. It will take some minutes for syncing your emails and attachments.