GMail has introduced a new feature in their labs, Message Sneak Peak. By enabling this feature, users will be able to preview their messages directly from their inbox.
The feature may not be very useful for everyone, but those who dont want to spend a lot of time in viewing each and every message arrived in their inbox, can easily use this Message Sneak Peak feature, to preview their messages right from their inbox.
How To Use Message Sneak Peak
Goto the Labs, by clicking on the green labs button on the top right. Enable Message Sneak Peak and save the labs settings.
After successfully saving and enabling the Message Sneak Peak feature, goto your inbox, and start using the Message Sneak Peak feature by right clicking on the message you want to preview.