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Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps

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

Scalable no-SPOF IMAP/POP3 mail server

Email (IMAP/POP3), contacts and calendar server

IMAP and POP3 server written primarily with security in mind

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

Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based cal

A small and easy to configure SMTP and POP3 server for Windows and Linux

Message transfer agent (MTA) developed at the University of Cambridge

Fast, highly extensible, and event driven SMTP server

Secure SMTP server implementation from the OpenBSD project

Fast, easy to administer, and secure Sendmail replacement

Message transfer agent (MTA)

Access GNU Mailman v3 archives

Manage electronic mail discussion and e-newsletter lists

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

Web user interface to access GNU Mailman

GPG-enabled mailing list manager with resending-capabilities

Mailing list manager

Feed reader for your email accounts

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

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

Another browser-based IMAP client

A fast Rust based tool to serialize text-based files in a repository or directory for LLM consumptio