Oddbean new post about login | logout There is one key difference though -- unlike email, a single message can be relayed by many different servers without loosing its uniqueness. As in... decentralization, you know?
What you're describing is redundancy, which email also has. Not decentralization.
Mmmm... no, it's not the same. I can send an email from different SMTP servers, but messages not coming from the "right" SMTP are nowadays mostly discarded. And even during the times when that used to worked the recipient couldn't verify its authenticity. And even if that really worked today then I won't be able to receive replies unless I submit myself to centralization (single point of failure, the postmaster.) See? You don't understand how it works.