Does it matter that much? If you need 1:1 private comms, personal SSL certs and a Dockerized chat client are available?

Email only persists due to nostalgia. We have literally dozens of other methods to sync state between two machines.

Private git repo? Private IRC?

Note how providers are not blocking other options. Email is inherently insecure due to the header structure, and open to the world by default is an invitation to be misused by spam.

Sorry everyone but an "open world" has revealed we're all just biological meat suits everywhere doing human shit, hallucinating there's some culture binding us (which just translates to "practice of a cult").

Breaking Bad ended 10 years ago. Star Wars was decades ago. Email is terrible in many ways. Move along.