That is why we should stop relying on email as a login or account recovery method and move to a fully passkey-based system (or something similar), where providing an email address becomes optional rather than a requirement for registration.

At the same time, direct communications between individuals or businesses, especially those that still rely on legacy, letter-like mechanisms, should also evolve. We need a new standard, similar in spirit to what Signal has achieved for instant messaging, but designed for more formal and authenticated communications.