ARES: Automatic REcord System - A DNS Operator for Kubernetes
this is a grounds up super fast and light weight smtp client and server library you can integrate it into a rust app to manage email transfer natively.
Stalwart Mail and Collaboration Server
Fast, async DNS lookup library and CLI -- modern dig/host replacement with parallel multi-server queries, DoH, DoT, subdomain discovery, and zone verification
Newsletter and mailing list management from the terminal. Built for AI agents on top of email-cli.
Concurrent URL status checker that captures comprehensive metadata in SQLite.
Official Rust SDK for the Lettr Email API.