Keyboard shortcuts is an awesome timesaver once you have trained yourself to use it.
Keyboard Shortcuts must first be enabled from the Gmail Settings before you can start to use it.
To enable keyboard shortcuts:
Click the Gear Icon
Select Settings
Select General
Enable Keyboard shortcuts
To access the shortcuts from Gmail, press SHIFT + ?
Here are our favourites!
C = Compose a new email
R = Reply to sender
A = Replay to all
F = Forward
G+I = Go to Inbox
G+S = Go to Starred emails
Let us know in the comments below what are your favourite Gmail keyboard shortcuts.