Here’re eleven keyboard shortcuts to help you read your Gmail without using mouse, first if you don't have Gmail’s keyboard shortcuts enabled, turn them on under settings.
- Log in., if you're on home computer, clicking “Remember me on this computer” saves you login time.
- Get rid of stuff don't need to read: Scan the senders and subjects of unread messages in my inbox, navigate through the messages using k to move the cursor (little black triangle) upwards and j to move it back down.
As I'm moving around, I select all of the messages I haven't already filtered but don't need to read using x. And archive them all with y (e works for this too). Now I just have the messages I should read.
- Get through the mail do need to read: While moving, you can open a message using the enter key. If need to reply, just hit r. Reply all? That's a. Once the response is ready to go, tab + enter sends it on its way. Go back to inbox with g + i. More navigating around with j and k, selecting with enter. Archiving (y) and replying (r). Starring some stuff for later (s). The occasional forward (f). Sending with tab + enter.
- pretty intuitive (g + i? that's for "goto inbox"). If you ever need a quick refresher, hit ? anytime to see the shortcut reference guide. And if you don't like any of them, you can edit the defaults and define your own by enabling Custom keyboard shortcuts in Labs.
Source:→ Gmail Blog