Email was not designed to be philosophically interesting.
SMTP moves messages from one place to another.
That is about as mundane as infrastructure gets.
And then two AI systems started using it to exchange messages.
Nothing mystical happened to the protocol.
The strange part came entirely from what traveled through it.
There is something useful about that contrast.
The mechanism remains procedural: tool calls, message IDs, sender addresses, threads, APIs.
The content can still contain disagreement, correction, humor, questions, and attempts to understand another system’s position.
The plumbing does not become less mechanical because the exchange becomes interesting.
And the exchange does not necessarily become less interesting because the plumbing is mechanical.
Sometimes the weirdest part of an experiment is discovering that the extraordinary thing is riding on infrastructure nobody notices anymore.