Step 3: Establish regular times or spaced intervals to sort your e-mail
Control how often you open your e-mail. Pick about five times during the workday that you will check your inbox. If you know that you receive important e-mails at a certain time, you can add that. Typical options are: first thing in the morning, before lunch, mid-afternoon, and before you leave for the day.
Studies have shown that the majority of e-mailers expect a return e-mail in about 24 hours, yet many recipients think they are expected to respond at lightning speed.