When I started doing inbox zero, I actually spent much, much less time on email. An email you leave in your inbox costs you mental energy every time you see it. An email you deal with immediately costs you only once.<p>Also learning to use the gmail shortcuts J, K, <enter>, X, Y (or E), C, shift-I, *-A, and G-I was very helpful. You can type ? from the gmail home screen to see the shortcuts. Try it out!