Modern email can be built from borrowed parts
Summary
The article envisions building a successor to email on top of HTTP, proposing HMTP (Hypertext Mail Transfer Protocol) and a stack of existing, standardized technologies (HTTP, TLS, WebFinger, ActivityPub, Webmention, Ed25519, HPKE, sigchains, etc.). It discusses discovery, identity, delivery via a sender's outbox, end-to-end signing and encryption, anti-spam concepts, and reading with JMAP, arguing for a cryptographically driven alternative to SPF/DKIM/DMARC and traditional SMTP. A prototype in Python is mentioned, with caveats about unaudited cryptography and scope.