With few exceptions, e-mail use arose organically within organizations, with little thought applied to how digital communication might best serve the relevant objectives.~ Cal Newport from, https://www.calnewport.com/blog/2015/06/18/the-e-mail-productivity-curve/
As usual, this is an interesting article from Newport. He proposes a productivity curve for email—how productive we are without, with-some, with-more, with-too-much—which explains perfectly why some people love email and some people hate it.
The key point about email is to use it intentionally. Not simply one’s own use; not simply, “I only check my email twice a day,” or, “I’m always at ‘inbox zero.'” The key is to deploy email wisely, in a way which increases productivity of a team, (family, community, whatever.) If adding email into the mix is going to increase productivity, then do so. Then zoom out and look at all your other communication tools, and perform the same calculus. Email is simply one example of a tool which initially [hopefully] increases productivity, but too-soon becomes a detriment.