Email. Can’t live with it; can’t live without it. And it can be a source of ongoing (endless) frustration unless you feel like you can get a handle on it. One strategy that works well for some is to set aside a certain part of the day to deal with emails. While that strategy can be very effective, it just doesn’t work for everyone.
If you can’t stand the idea of waiting until a prescribed time to answer all your emails, try setting your email to do a “send and receive” only once per hour, rather than every five minutes, or three minutes or (please tell me you don’t do this) every minute. By setting your “send and receive” on an hourly basis you not only limit your interruptions, you also build in breaks and won’t feel stressed by not looking at your email until the end of the day.