A cross-platform .NET library for IMAP, POP3, and SMTP.

Insular email distribution - mail server as Docker images

✉️ Composable all-in-one mail server.

A fast, highly extensible, and event driven SMTP server

A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.

An email spoofing testing tool that aims to bypass SPF/DKIM/DMARC and forge DKIM signatures.🍻

⚠️ UNMAINTAINED - Simple and full-featured mail server using Docker

Simple API, Complex Emails (Jakarta Mail smtp wrapper)

Awesome Opensource Email Resources

Multi architecture simple SMTP server (postfix null relay) host for your Docker and Kubernetes containers. Based on Debian/Ubuntu/Alpine.

Stalwart SMTP Server

A set of ansible scripts to build a personal mail server / private cloud / etc.

Verify any text in any sent or received email, cryptographically and via only trusting the sending mailserver.

Convert dmarc reports from xml to human-readable formats

DKIM Verifier Extension for Mozilla Thunderbird

E-mail delivery library for Rust with DKIM support

🔏 A Go library and tools for DKIM, DMARC and Authentication-Results

Internet standards compliance test suite

Internet.nl toolbox - how-to's for modern mail security standards (DMARC, DKIM, SPF and DANE)

Simple and full-featured mail server using Docker