A fast, highly extensible, and event driven SMTP server

The best free email forwarding for custom domains. Visit our website to get started (SMTP server)

Transactional email server with a lovely web interface

Exim Mail Transport Agent - source, testsuite and documentation

SMTP (email) server with a focus on simplicity, security, and ease of operation [mirror]

A next-gen Mail Transfer Agent (MTA) written in Rust.

📩🛡 Email privacy. Anonymously send and receive with alias forwarding.

Collaborative open-source successor to qmail

A reimplementation of the Python stdlib smtpd.py based on asyncio.

JSON proxy server for the MTA's realtime New York City subway feed

Dockerfiles for the Mailman suite.

Mailway installer, host your own Mailway instance

qpsmtpd is a flexible smtpd daemon written in Perl

Multi-Target Application (MTA) build tool for Cloud Applications https://sap.github.io/cloud-mta-build-tool

The repository contains multitarget application (MTA) examples for SAP BTP, Cloud Foundry environment. Examples demonstrate how to achieve different goals using MTAs and show the capabilities of MTA deployment service in the Cloud Foundry environment.

Mirrored from GitLab! Monitoring and automation for Open Source email servers, starting with Postfix. Please do not submit issues or PRs here - join us at: https://gitlab.com/lightmeter

The first Open-Source high-performance MTA developed from the ground-up for high-volume email sending environments.

The highly customizable ruby SMTP-Server and SMTP-Service library with builtin support for AUTH and SSL/STARTTLS, 8BITMIME and SMTPUTF8, IPv4 and IPv6 and additional features.

Chef cookbook example to install and configure a mail server using Postfix, Dovecot, PostfixAdmin and SpamAssassin.

Blackhole is an MTA written on top of asyncio, utilising async and await statements that dumps all mail it receives to /dev/null.