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awesome-opensource-email

Awesome Opensource Email Resources
https://github.com/Mindbaz/awesome-opensource-email

Last synced: 4 days ago
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Sending
- SPAM Filtering
  - Proxmox Mail Gateway - Full-featured, open-source mail proxy and protects your mail server from spam, viruses, trojans, and phishing emails - `GNU AGPLv3`
  - Spamassassin - Open Source anti-spam platform - `Apache License Version 2.0`, `Perl`, `C`
  - Rspamd - Advanced spam filtering system and email processing framework.
  - Spamscope - Fast Advanced Spam Analysis Tool.
  - AgentJ - AgentJ is a free software anti-spam solution with human authentication and admin panel - `AGPL`, `PHP`
  - ASSP - The Anti-Spam SMTP Proxy (ASSP).
- SMTP Server
  - KumoMTA - The first Open-Source high-performance MTA developed from the ground-up for high-volume email sending environments. - `Rust`, `Lua`
  - Zone-MTA - Modern outbound MTA cross platform and extendable server application - `Nodejs`
  - Postal - A fully featured open source mail delivery platform for incoming & outgoing e-mail
  - Maddy - Composable all-in-one mail server - `GPLv3`, `Go`
  - Chasquid - SMTP (email) server with a focus on simplicity, security, and ease of operation - `Ruby`
  - MailWhale - A bring-your-own-SMTP-server mail relay with REST API and web UI
  - Cuttlefish - Transactional email server with a lovely web interface - `AGPLv3`, `Ruby`
  - DragonFly - A small MTA for home and office use - `Linux`, `UNIX`, `BSD`, `C`
  - SMTPRelay - Simple Golang SMTP relay/proxy server - `MIT`, `Go`
  - Mox - modern full-featured open source secure mail server for low-maintenance self-hosted email - `MIT`, `Go`
  - Postfix - The most famous email server - `IPL-1.0`, `C`
  - Haraka - A modern, high performance, flexible SMTP server - `Nodejs`
  - hMailServer - A user friendly IMAP, SMTP and POP3 server with admin GUI and spam protection. - `Windows`, `AGPLv3`, `C++`
  - EmailRelay - A small SMTP and POP3 server that is easy to configure - `Windows`, `Linux`, `OpenWrt`, `GPLv3`, `C++`
  - Stalwart SMTP - Stalwart SMTP is a modern SMTP server developed in Rust with a focus on security, speed, and extensive configurability - `AGPLv3`, `Rust`
- Email Testing Application
  - Blackhole - Blackhole is an MTA written on top of asyncio, utilising async and await statements that dumps all mail it receives to /dev/null.
  - SMTP4dev - the fake smtp email server for development and testing
  - Maildev - mailbox SMTP Server + Web Interface for viewing and testing emails during development.
  - Inbucket - Disposable webmail server (similar to Mailinator) with built in SMTP, POP3, RESTful servers; no DB required.
  - Opentrashmail - Selfhosted trashmail solution - Receive Emails via Web UI, JSON API and RSS feed
  - TestMSG - Generate RFC-compliant e-mail messages for sending over SMTP. DKIM signed (optionally). - `MIT`, `Python`
- IMAP/POP Server
  - Dovecot - Dovecot mail server
  - Cyrus - Cyrus IMAP is an email, contacts and calendar server
  - Stalwart IMAP server - Stalwart IMAP is an open-source Internet Message Access Protocol server designed to be secure, fast, robust and scalable
  - Wildduck - Modern mail server software for IMAP and POP3. Modern being scalable, Unicode-first, and API-controlled
- Complete Email Server
  - Mailu - Insular email distribution - mail server as Docker images
  - Erooster Email Server - A mail suite written in rust meant to be easy to use.
  - Zimbra Open Source Edition - A full featured email service.
  - Excision-Mail - Fullstack, security focused, personal mail server based on OpenSMTPD for OpenBSD `ISC License`
  - Docker Mailserver - Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. - `MIT`
  - Mailinabox - 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.
  - iRedMail - Open Source Mail Server Solution
  - Modoboa - Modoboa brings together Open Source's finest in a single interface.
  - Mailinabox - 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.
- Forwarding
  - Forward Email - The best free email forwarding for custom domains. Visit our website to get started (SMTP server)
  - Anonaddy - Anonymous email forwarding
- SMTP Testing
  - MailHog - Web and API based SMTP testing - `MIT`, `Go`
  - MailCrab - Email test server for development, written in Rust - `Apache License`, `Rust`
  - MailPit - An email and SMTP testing tool with API for developers - `MIT`, `Go`
  - Robin - Debug and development tool for MTA architects! Robin is a highly configurable SMTP client for testing and debugging SMTP servers. - `Java`, `Apache License 2.0`
  - MailCatcher - Catches mail and serves it via a webui - `MIT`, `Ruby`
- Inbound
  - Inbound SMTP to Webhook - Receive email and sent parsed content/headers to webhook, attachments to S3.
- JMAP Server & others
  - James - James stands for Java Apache Mail Enterprise Server! - `Apache License Version 2.0`, `Java`
  - Stalwart JMAP server - Stalwart JMAP is an open-source JSON Meta Application Protocol server designed to be secure, fast, robust and scalable - `GPLv3`, `Rust`
  - JMAP - JSON Meta Application Protocol Specification (JMAP) Specification
  - Gomap - Go module for interfacing with JMAP servers
Deliverability
- Email Verification
  - Mailchecker - Cross-language email validation. Backed by a database of over 55 000 throwable email domains.
  - EmailValidator - PHP Email address validator
  - Truemail - Configurable framework agnostic plain Ruby email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists. - `MIT`, `Ruby`
  - email-validator-js - Verify email address checking MX records, and SMTP connection, check for disposable email addresses and free email providers. - `MIT`, `Typescript`
  - Email-Verifier - A Go library for email verification without sending any emails. - `MIT`, `Go`
  - CustomerOS MailSherpa - A CLI for verifying email address deliverability over SMTP without sending an email. - `AGPL-3.0`, `Go`
  - python-email-validator - A robust email syntax and deliverability validation library for Python. `The Unlicense`, `Python`
  - Reacher - Check if an email exists without sending any email. - `Dual Licence Commercial/AGPL`, `Rust`
- Reputation
  - Google Postmaster Datas - Downloads and flattends datas from Google Postmaster Tools (GPT)
  - Python Hetrixtools Blacklist - Tool to retrieve @hetrixtools data from their API and store them in flat file or in a database
Email Platform
- Marketing Platform
  - Mautic - Open Source Marketing Automation Software
  - Sendportal - Open-source self-hosted email marketing. Manage your own newsletters at a fraction of the cost.
  - Ferdinand - Open-source email delivery service for developers. `GNU Affero General Public License v3.0`, `templ`, `javascript`, `Go`
  - Plunk - Open-Source Email Platform - `GNU Affero General Public License v3.0`, `typescript`
- Newsletter Platform
  - Listmonk - High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
  - Mailtrain - Self hosted newsletter app
  - Keila - Keila is an Open Source alternative to newsletter tools like Mailchimp or Sendinblue.
  - phplist3 - Fully functional Open Source email marketing manager for creating, sending, integrating, and analysing email campaigns and newsletters.
  - MailCarrier - Mailing platform with templates and logs included. - `MIT`, `php`, `Laravel`
  - RSS2Newsletter - Convert RSS/Atom feed to email newsletters - `GNU Affero General Public License v3.0`, `Python`
Code
- Framework
  - MJML - Framework to make responsive-email easy
  - Maizzle - HTML email development framework
- Templating
  - Hermes - Golang package that generates clean, responsive HTML e-mails for sending transactional mail
  - Maud - Compile-time HTML templates for Rust - `MIT`, `Apache License`, `Rust`
  - Foundation for Emails 2 - Quickly create responsive HTML emails that work on any device and client. Even Outlook. - `MIT`, `HTML`
  - Inky - Convert a simple HTML syntax into tables compatible with Foundation for Emails.
  - Cerberus - A few simple, but solid patterns for responsive HTML email templates and newsletters. Even in Outlook and Gmail.
  - HEML - HEML is an open source markup language for building responsive email.
- Library
  - go-smtp - An SMTP client & server library written in Go - `MIT`, `Go`
  - go-mail - Easy to use, yet comprehensive library for sending mails with Go - `MIT`, `Go`
  - go-msgauth - 🔏 A Go library and tools for DKIM, DMARC and Authentication-Results - `MIT`, `Go`
  - lettre - a mailer library for Rust - `MIT`, `Rust`
  - mailparse - Rust library to parse mail files - `BSD Zero Clause`, `Rust`
  - Nette Mail - Handy email creation and transfer library for PHP with both text and MIME-compliant support.
  - Stampie - Library for using online Email providers for PHP
  - Play-Mailer - Play mailer plugin for Scala
  - MailKit - A cross-platform .NET library for IMAP, POP3, and SMTP.
  - MimeKit - A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.
  - PHPMailer - The classic email sending library for PHP
  - Swoosh - Compose, deliver and test your emails easily in Elixir - `MIT`, `Elixir`
  - Sisimai - Mail Analyzing Interface: A library to parse RFC5322 bounce emails and generating structured data as JSON from parsed results. For Perl, Go & Ruby
  - Nodemailer - A Node.js library
- Other
  - Can I email - Can I email… Support tables for HTML and CSS in emails.
  - HowToTarget.email - How to target email clients for email development.
  - Email CSS Resets - List of email CSS normalise/resets.
Editing
- Email Builder & Visual Editing Component
  - LePatron - LePatron is an opensource email builder allowing to industrialize your email template production. Build tailor made email templates and make them available to your non-technical users.
  - Mosaico - Responsive Email Template Editor
  - React Email Editor - Drag-n-Drop Email Editor Component for React.js
  - Vue Email Editor - Drag-n-Drop Email Editor Component for Vue.js
  - MySigMail Card - An open source html email template builder with drag & drop editor
  - Paperbits emails - Paperbits editors and generators for email templates.
  - Easy Email - DnD Email Editor based on React.js and MJML.
  - Drag-and-Drop-Email-Designer - Drag and drop HTML email designer - `MIT`, `Typescript`
Email Solution
- Groupware / Webmail
  - Tutanota - Tutanota 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.
  - Cypht - Cypht: Lightweight Open Source webmail written in PHP and JavaScript - `GNU Lesser General Public License v2.1`, `PHP`, `Javascript`
  - Roundcube - The Roundcube Webmail suite - `GPLv3`, `PHP`
  - Egroupware - Web based groupware server written in PHP - `GPLv2`, `PHP`
  - Bluemind - Collaborative messaging solution
  - Mailcow - The mailserver suite with the 'moo' – 🐮 + 🐋 = 💕
Security
- Security Check
  - Trustymail - Scan domains and return data based on trustworthy email best practices
  - mailsec-check - Another utility to analyze state of deployment of security-related email protocols.
  - E-Mail Header Analyzer - E-Mail Header Analyzer
  - Domain Security Scanner - Scan domains and receive advice based on their BIMI, DKIM, DMARC, and SPF records - `Apache License version 2.0`, `Go`
  - Mailgoose - A web application that allows the users to check whether their SPF, DMARC and DKIM configuration is set up correctly. - `BSD 3-Clause "New" or "Revised" License`, `Python`
  - mxcheck - mxcheck is an info and security scanner for e-mail servers. `GPL v-3`, `Go`
- DMARC
  - dmarc-report-converter - Convert DMARC report files from xml to human-readable formats
  - Open DMARC Analyzer - Open DMARC Analyzer is an Open Source DMARC Report Analyzer to be used with DMARC reports that have been parsed by John Levine's rrdmarc script or techsneeze's dmarcts-report-parser.
  - DmarcSrg - A php parser, viewer and summary report generator for incoming DMARC reports.
  - dmarcts-report-parser - A Perl based tool to parse DMARC reports from an IMAP mailbox or from the filesystem, and insert the information into a database. ( Formerly known as imap-dmarcts ) - `GNU GPL v3`, `Perl`
  - parsedmarc - A Python package and CLI for parsing aggregate and forensic DMARC reports - `Apache License version 2.0`, `Python`
  - checkdmarc - A parser for SPF and DMARC DNS records - `Apache License version 2.0`, `Python`
  - Viesti-Reports - DMARC & SMTP-TLS Reports processor and visualizer and BIMI file hoster - `GPL v2`, `PHP`
- Privacy
  - SimpleLogin - Protect your online identity with email alias
- Disposable emails domain list
  - disposable-email-domains - a list of disposable and temporary email address domains - `Public Domain`, `Python`
  - disposable-email-domains (another one) - Disposable email domain lists, used in disposable email services, generated every quarter of an hour, in txt and JSON format. - `MIT`, `PHP`
  - disposable - A list of disposable/temporary email address domains - `MIT`, `Python`
  - disposable-email-domains (another one too) - Anti-cheating, temporary (disposable/throwaway) email list - `MIT`, `Javascript`
  - email_data - This project is a compilation of datasets related to emails. Includes disposable emails, disposable domains, and free email services. - `MIT`, `Ruby`
  - disposable-email-domain-list - A list of disposable email domains, cleaned and validated by scanning MX records. - `MIT`, `Python`

Programming Languages

Go 18 Python 17 PHP 17 Rust 8 JavaScript 8 TypeScript 8 HTML 5 Ruby 4 C 4 C# 3

Ecosyste.ms: Awesome

awesome-opensource-email

Sending

SPAM Filtering

SMTP Server

Email Testing Application

IMAP/POP Server

Complete Email Server

Forwarding

SMTP Testing

Inbound

JMAP Server & others

Deliverability

Email Verification

Reputation

Email Platform

Marketing Platform

Newsletter Platform

Code

Framework

Templating

Library

Other

Editing

Email Builder & Visual Editing Component

Email Solution

Groupware / Webmail

Security

Security Check

DMARC

Privacy

Disposable emails domain list