Ok I've explained this twice, so this will be my last attempt. Because people hear the word "email" and upon hearing the word "email" they, wait for it, think it's email. You know, the email they've used for 20 years. Once they hear the word "email" they stop hearing anything else. They heard the word "email" and have automatically filled in the rest with their experiences of typing "dear madam blah blah blah best regards" and CC this person so they can see it. They have filled it in with their user experience. They have never thought about the inner workings of email with servers or intercommunication.

People do not need to know about the inner workings of email or lemmy in order to use them. Trying to explain the inner workings before they even start is entirely unnecessary. And trying to explain with a different service like email is even worse, well because of what I wrote above. It confuses them.