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9.3

9.6

9.2

7.7

9.2

3.4

9.1
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8.9

10.0

62 Email software solutions and projects

  • Listmonk

    9.3 9.6 Go
    High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
  • Mail-in-a-Box

    9.2 7.7 L3 Python
    Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
  • InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
    Promo www.influxdata.com
    InfluxDB Logo
  • Postal

    9.2 3.4 Ruby
    ๐Ÿ“ฎ A fully featured open source mail delivery platform for incoming & outgoing e-mail
  • MailHog

    9.1 0.0 Go
    Web and API based SMTP testing
  • docker-mailserver

    9.0 8.7 Shell
    DISCONTINUED. A fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker. [Moved to: https://github.com/docker-mailserver/docker-mailserver]
  • Mautic

    8.9 10.0 L2 PHP
    Mautic: Open Source Marketing Automation Software.
  • Mailcow

    8.8 9.5 JavaScript
    mailcow: dockerized - ๐Ÿฎ + ๐Ÿ‹ = ๐Ÿ’•
  • Mailpile

    8.7 4.0 L2 Python
    A free & open modern, fast email client with user-friendly encryption and privacy features
  • Roundcube

    8.5 9.4 L3 PHP
    The Roundcube Webmail suite
  • mail-server

    8.4 9.6 Rust
    All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
  • LibreNMS

    8.4 9.9 L2 PHP
    Community-based GPL-licensed network monitoring system
  • Mail For Good

    8.3 0.0 JavaScript
    DISCONTINUED. An open source email campaign management tool for nonprofits
  • Mailu

    8.2 8.7 Python
    Insular email distribution - mail server as Docker images
  • Tutanota makes encryption easy

    8.1 9.9 TypeScript
    Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
  • MailCatcher

    8.1 5.2 L5 Ruby
    Catches mail and serves it through a dream.
  • Mailtrain

    8.0 0.0 JavaScript
    Self hosted newsletter app
  • Haraka

    7.9 7.3 L3 JavaScript
    A fast, highly extensible, and event driven SMTP server
  • SimpleLogin

    7.9 9.4 Python
    The SimpleLogin back-end and web app
  • RainLoop

    7.9 0.0 L3 PHP
    DISCONTINUED. Simple, modern & fast web-based email client
  • ProtonMail Web Client

    7.8 10.0 TypeScript
    Monorepo hosting the proton web clients
  • AnonAddy

    7.1 6.6 PHP
    Anonymous email forwarding
  • Modoboa

    7.1 9.6 L5 Python
    Mail hosting made simple
  • formspree

    7.0 0.0 L3 Python
    DISCONTINUED. The successor to this repository is actively maintained at https://formspree.io. Its source code is not available
  • wildduck

    6.4 8.4 JavaScript
    Opinionated email server
  • DebOps

    6.0 9.6 Jinja
    DebOps - Your Debian-based data center in a box
  • Mailman

    5.9 0.0 L5 Ruby
    DISCONTINUED. The Gnu mailing list server.
  • Keila

    5.7 9.2 Elixir
    Open Source Newsletter Tool.
  • Dovecot

    5.6 9.9 L3 C
    Dovecot mail server
  • Maildrop

    5.5 0.0 CSS
    DISCONTINUED. Disposable email SMTP server, also useful for development.
  • Cypht

    5.4 9.6 L4 PHP
    Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
  • phpList

    5.3 8.5 PHP
    Fully functional Open Source email marketing manager for creating, sending, integrating, and analysing email campaigns and newsletters.
  • Exim

    5.1 9.6 L1 C
    Exim Mail Transport Agent - source, testsuite and documentation
  • Disposable Mailbox

    4.6 0.0 PHP
    DISCONTINUED. Simple disposable mailbox web-app based on a catch-all IMAP mailbox.
  • OpenSMTPD

    4.6 8.2 L2 C
    This is official OpenSMTPD Portable repository. Forks, pull requests and other contributions are welcome!
  • MailyHerald

    4.3 0.0 L5 Ruby
    Advanced email processing solution for Ruby on Rails applications
  • WebMail Lite

    4.3 0.0 L2 PHP
    AfterLogic WebMail Lite PHP. Fast and easy-to-use webmail front-end for your existing IMAP mail server, Plesk or cPanel.
  • homebox

    4.0 9.4 Shell
    A set of ansible scripts to build a personal mail server / private cloud / etc.
  • Ptorx

    3.4 0.0 TypeScript
    DISCONTINUED. ๐Ÿ“ฉ๐Ÿ›ก Email privacy. Anonymously send and receive with alias forwarding. (Abandoned)
  • MailCare

    3.1 0.0 PHP
    DISCONTINUED. [MIRRORING REPOSITORY] See https://gitlab.com/mailcare/mailcare. MailCare is an open source disposable email address services. Accessible via web browser or API to protect your privacy right now.
  • Isotope Mail

    3.1 0.0 JavaScript
    Isotope Mail Client
  • Inboxen

    3.0 0.0 Python
    DISCONTINUED. Main repo for Inboxen.org
  • Dada Mail

    3.0 7.7 L3 Perl
    Self-Hosted, Full Featured, Email Mailing List Manager. Announcement + Discussion Lists, Web-based Installer, Installs with minimal dependencies, sendmail/SMTP/Amazon SES supported
  • Slimta

    2.9 2.8 L5 Python
    Python libraries to send, receive, and queue email.
  • AnsiMail

    2.4 0.0 Jinja
    Fullstack, security focused, personal mail server based on OpenSMTPD for OpenBSD
  • Courier MTA

    2.1 7.9 L1 C
    Courier Mail Server
  • iRedMail

    1.1 -
    Full-featured mail server solution based on Postfix and Dovecot.
  • Piler

    1.1 -
    feature rich open source email archiving solution.
  • Lightmeter

    1.0 0.0
    Lightmeter uses GitLab, not GitHub -- find repos at: https://gitlab.com/lightmeter
  • Qmail

    0.9 0.0
    Bind to different local ip addresses depending on the domain part of the sender argument when using `qmail-remote`.
  • Simple NixOS Mailserver

    -
    A complete mailserver solution leveraging the Nix Ecosystem.
  • Sendmail

    -
    Message transfer agent
  • Sympa

    -
    A mailing list manager.
  • SquirrelMail

    -
    Another browser-based IMAP client.
  • HyperKitty

    -
    Open source Django application to provide a web interface to access GNU Mailman v3 archives.
  • Postorius

    -
    Web user interface to access GNU Mailman.
  • Qmailtoaster

    -
    Stable, full-featured, easy-to-install mail server based on qmail.
  • Postfix

    -
    Fast, easy to administer, and secure Sendmail replacement.
  • IMP

    -
    HORDE application that provides webmail access to IMAP and POP3 accounts.
  • Citadel

    -
    Feature packed, easy, versatile, and powerful mail server, thanks to exclusive "rooms" based architecture.
  • Cyrus IMAP/POP3

    -
    Intended to be run on sealed servers, where normal users are not permitted to log in.
  • Schleuder

    -
    A GPG-enabled mailing list manager with resending-capabilities.
  • chasquid

    -
    SMTP

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