[Qwertystop]

Email is simple, and works. I doubt anything is going to replace it as the default for what you list unless something massive and bizarre happens that brings down email in general so that everyone has to start from scratch and may as well put together something else.

Blockchain-based systems are... not simple, though they do do work. The advantage there is... what? The ability to verify sender/recipient? At the cost of massive power consumption to keep the encryption going, an unnecessary level of distribution for most purposes, and, as best as I can tell, the inability to delete anything that nobody involved cares about anymore.

If anything replaces email, it'll be basically email with security built in (end-to-end encryption and the guarantee that the From address matches the sender). More than that (maybe a little extra, I might have missed something) is overkill. Even that much is unlikely to come up except as patches on a per-provider basis, which might hopefully become omnipresent enough to remove support for the old version.

[veddox]

We've had such a lot of "exciting new technologies that are going to replace email in x years" that I don't believe anything ever will - at least as long as we continue to have computers, keyboards and the Internet... (Although having said that, email is older than the Internet ;-) )

[thecupisblue]

Completely agree.

Email is simple, powerful and everyone understands it. Yes, we need more security, better filtering and all, but not a replacement for it.

[voaie]

Yeah, would be great if it is easy to implement an e-mail client (without bloat). The current situation is depressing.