Erm, you need to have an email to register for any kind of service out there, so "know how to use email" is pretty much a requirement even for everyone. And this is not going away, unless you want a future where everyone has to be reached thru uncompatible walled gardens.
Erm, you need to have an email to register for any kind of service out there, so "know how to use email" is pretty much a requirement even for everyone. And this is not going away, unless you want a future where everyone has to be reached thru uncompatible walled gardens.