Tired of answering emails? Do you want to become more productive?

Finally I started implementing what I mentioned earlier.

Lately when my colleagues are asking me "did you see my email" or "did you read my email" and my answers were typically "No, I turned my email off" to experiment what Nathan Zeldes who is a principal engineer at Intel calls "Quiet Time" methodology. (At least one can concentrate and do some thinking when it is quite)
It's great! Try turning your email off for few hours every day.
You'll like it and you'll get more things done.
If anything earth shuttering, they should call you, or if logistically possible they should stop by at your office. They all know how to find you.