Love mailcow I moved off exchange to mailcow. I’ve used email for I guess 30 years now and every year it’s less reliable. My kids do not use email at all , they are on the internet with out actually using email. Sure they have a google account for YouTube but their services tend to allow a sign up with out an email. I can see a future where it continues to be less of a thing and turn into something held on by older people.