I published my essay on re-thinking email.

There are many problems with the existing Internet email system, such as spam, scam, surveillance, insecurity, centralization, and complexity. The problems are starting to outweigh the benefits of the system. Fixing the problems by evolving the current system seems overwhelmingly difficult. This essay examines some solutions to the problems on the assumption that a completely new, parallel email system can be built.

This is not a proposal for a new system, but an exploration of the solution space, meant to provoke constructive discussion.