I think email is ever diminishing as a communication medium because it's just so terribly broken. You can't verify the sender is who they say they are, you can'

I think email is ever diminishing as a communication medium because it's just so terribly broken. You can't verify the sender is who they say they are, you can't be sure that the recipient receives your message and is the only one to see it. I don't use it for personal communication anymore. With some businesses perhaps but most of that has relegated email to a buggy notification service ("come check our portal for your message") because email can't be trusted with confidential data. It still has an important role in the identity process but that's mainly for historical reasons. It's also grossly unsuited for that and I don't understand why open ID federation like OpenID never took off.