There are a lot of stragglers that haven't realized it's redundancy yet, and madly spend a significant percentage of their time and effort organizing this pulsating mass of ever-changing chaos.
If you keep replying, they'll keep asking.
Cut it down to a quick squizz once a day and get in with the actual productive work.
(My experience written as universal. I'm aware there are some important emails - but I challenge that there aren't as many as you think there are)
Edited to add: you can only work on one thing at a time. It should always be the highest priority item. If something comes in via email, there's little to no likelihood that it should be jumping to the top of the pile (email is not a real-time communication platform, and people who think it is should be corrected). An email is like the first pangs of hunger: at least 24 hours from becoming important.