I can’t select whom emails me. I see everything that comes to me.
The same thing is not true for say, Twitter, where I only see posts from people I explicitly follow.
The same thing is not true for say, Twitter, where I only see posts from people I explicitly follow.
If you are in control of your mail server you can block email addresses, even entire domains or IP spaces. I do not understand this statement.
edit: Opt-in, not opt-out. Whitelist, not blacklist.
Of course you can set your email server to reject every single email that you do not have in a whitelist, but that’s not a feature of the protocol. Plus it’s something you need to manually do (because most people don’t want -or expect that- from email).
People expect Twitter (or similar apps/protocols) to not show them messages other than from people that are explicitly followed.