The average person checks email 77 times a day, sends and receives more than 122 email messages a day, and spends 28 percent or more of their workweek managing a constant influx of email.
Jocelyn K. Glei, author of "Unsubscribe: How to Kill Email Anxiety, Avoid Distractions and Get Real Work Done" says that while checking emails throughout the day may make you feel productive, the opposite is true.
In an interview with The Telegraph, Jocelyn said, "…keep work emails short, simple and if something can't be resolved quickly on email, suggest a meeting or simply walk to your colleague's desk to confirm a plan. You'll be rescuing yourself and others from those annoying email threads that drag on for a whole afternoon, interrupting everyone involved."
I use the action approach to clear my inbox:
When I open an email, I make a quick decision: Delete/archive, act now (if it takes a minute or two) and then reply/archive, send a quick reply (and then archive) or add to my to-do list to do later at a specific time. I keep emails insanely short. Keeping them short means it's quick to reply.
Most people tend to check their emails every five to 10 minutes. But if you add up all of the minutes that it takes to continually check your inbox and then reply, it's easy to see why it's such a time waster.