Lifehacker says "Gmail is the best email client around..." and provides some advanced tips in today's posting. Note Google Apps users should install "Google Apps desktop features" from Advanced Tools in your Google Apps Administrator Control Panel instead of the other notifier utilities mentioned for changing your default email client on Windows. Also SmartLabels we think overcomplicates things so not recommended. Otherwise lots of advanced tips to help make you a Gmail Ninja.
http://lifehacker.com/5861810/master-the-new-gmail-with-these-tips-shortcuts-and-add+ons?tag=gmail
Google+