ALL TOOLS

Modular IRC server written in C++ for Linux, BSD, Windows, and macOS.

A modern web IRC client with customizable themes.

Simple, modern, lightweight & fast web-based email client (fork of RainLoop)

Sympa manages email lists for communities and organizations

GPG-enabled mailing list manager with resending-capabilities

Browser-based IMAP client with an application-like user interface

Email feeds and web subscriptions in one unified inbox

The web interface for GNU Mailman.

Manage electronic mail discussion and e-newsletter lists

Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services

A simple webmail client for reading email anywhere

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

Modern IRCv3 server written in Go, combining the features of an ircd, a services framework, and a bouncer

Newsletter and email marketing with advanced management of subscribers, bounces, and plugins

The complete, scalable, and open-source email, contacts, and calendar server.

Scalable open-source mail server with no single point of failure

Mail hosting and management platform including a modern and simplified web user interface

SMTP server that sends and receives emails according to a simple configuration file, with an optional web interface that you can use to browse your emails

Simple yet full-featured mail server as a set of Docker images

Complete e-mail solution with IMAP4, SMTP, SPF, DKIM, DMARC, MTA-STS, DANE and DNSSEC, reputation-based and content-based junk filtering, Internationalization (IDNA), automatic TLS with ACME and Let's Encrypt, account autoconfiguration, and webmail

Complete email solution that runs on any webspace with PHP and MariaDB. It supports POP3 catchall mailboxes and can also integrate with Postfix or b1gMailServer if you're running your own server

All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database

All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features