dkim

Insular email distribution - mail server as Docker images

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

✉️ 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.🍻

A Python package and CLI for parsing aggregate and forensic DMARC reports

A better whois and domain intelligence toolkit

Simple API, Complex Emails (Jakarta Mail smtp wrapper)

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

Awesome Opensource Email Resources

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

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

Stalwart SMTP Server

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

Python library for building, templating, transforming, signing, and sending emails.

One unified email API across 18 providers (SMTP, Resend, SES, Postmark, SendGrid, Mailgun, …). Zero deps, RFC 8058 + DKIM ready, edge-first, strict TypeScript.

Convert dmarc reports from xml to human-readable formats

E-mail delivery library for Rust with DKIM support

DKIM Verifier Extension for Mozilla Thunderbird