>> _why_ communication has moved away from email
> Has it, though? I don't think we are any step closer now to dropping email than we were 25 years ago.
Email feels more like a tool for reaching out than for communicating to me. I.e. it serves like an RSS feed and serves like a way for unknowns (or long lost friends/acquaintances) to reach out to you.
Sure some people still use newsgroups and communicate daily over email, but for most people it's just a method to sign up for accounts in walled gardens.