Email middleware

3 reusable Email middleware libraries across every platform — libraries, SDKs, and drop-in systems. You should never have to know which ecosystem it lives in.

• gofer

  by cristianadrielbraun · Free · github

  Self-hosted multi-account email client with IMAP/SMTP, Gmail OAuth, contacts. Built with Go, templ, and HTMX, SQLite for storage

  EmailDatabase   Go

• notmutt

  by fishman · Free · github

  Async terminal mail client for notmuch: staged undoable tag ops, diff-and-insert refresh, HTML mail rendered in-terminal, easyjump link mode, dry-run filtering by default, TOML config, vim keys. Written in Go (tcell TUI).

  EmailDeveloper Tools   Go

• vectis

  by Veltara-Works · Free · github

  Self-hosted email server with the developer experience of a hosted sending API. Postfix + Dovecot + Rspamd in one declarative YAML config. REST API, admin UI, atomic updates with rollback. Source-available under BSL 1.1 (auto-converts to Apache 2.0 after four years).

  EmailAPI   Go