If your job doesn’t fundamentally depend on your email*, then ask yourself if you control your email or if email controls you. Our Email Is A Monster (Oatmeal). Some ideas to consider:

1. No matter how focused you are, when that little window flashes up in the corner of your screen or your phone beeps, you have at best a micro-distraction that derails your thinking and at worst a full distraction. Turn off your email notifications and schedule time during the day to open email.
2. Signal (high priority emails) to noise (low priority emails) in your inbox is a problem. Not all emails are equally worthy of your time. If conditional formatting (like in Outlook) is available, use it. Set a condition for when you are on the CC list. Read those last. Set a condition for when you are the only one on the TO: list. Set conditions for people that you need to respond to right away.

* Customer service type jobs and a few others do require constant vigilance of an inbox so the above suggestions don’t help you. Hopefully you have other techniques to make things more efficient.