The eulogy for email has been in slow-clap mode for a while. With social app after app after app promising to make communication faster than it already is, it's become a common theory that email is, if not dead, well on its way.
Of course, not everyone agrees. (There's even a whole website devoted to proving email is alive and well.)
But there's no doubt email has evolved, from the original snail-mail killer to a data-driven, customer-focused fox of a form.