Open-source projects categorized as Email | Edit details

Top 23 Email Open-Source Projects

  • GitHub repo N1

    :love_letter: An extensible desktop mail app built on the modern web. Forks welcome!

    Project mention: Fed up with the Mac, I spent six months with a Linux laptop | news.ycombinator.com | 2021-04-02

    > - Finding a mail client I don't hate on linux is tricky. I've never been able to get on with the console clients, and I actually quite like Mac Mail. Thunderbird is kinda okay.

    If you're not a mailing list based developer, I would recommend Nylas Mail, which is both snappy any polished.


  • GitHub repo PHPMailer

    The classic email sending library for PHP

    Project mention: PHP MAIL Authentication for Gmail Workspace account | reddit.com/r/PHPhelp | 2021-06-04

    This entry in PHPMailer's documentation describes what you'll need to do: https://github.com/PHPMailer/PHPMailer/wiki/Using-Gmail-with-XOAUTH2

  • GitHub repo awesome-falsehood

    😱 Falsehoods Programmers Believe in

    Project mention: But PETA is about not harming animals?? | reddit.com/r/facepalm | 2021-05-28

    "Falsehoods programmers believe about time" can serve as a starting point: https://gist.github.com/timvisee/fcda9bbdff88d45cc9061606b4b923ca https://github.com/kdeldycke/awesome-falsehood#dates-and-time

  • GitHub repo Nodemailer

    ✉️ Send e-mails with Node.JS – easy as cake!

    Project mention: How did Elliot programed program that will send files to police if he did not checked something everyday? | reddit.com/r/MrRobot | 2021-03-18

    Then He probably has some sort of Mailing script (via Nodemailer or PHP Mail) that uses SMTP

  • GitHub repo MJML

    MJML: the only framework that makes responsive-email easy

    Project mention: Using tables for everything. | reddit.com/r/webdev | 2021-06-22
  • GitHub repo Mailspring

    :love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.

    Project mention: Apple Is Killing Email Tracking With a Single Popup | reddit.com/r/privacy | 2021-06-15

    I remembered using Nylas email until it went closed source. I just found out that Mailspring (the rebranded Nylas) was re-opensourced so you could check that out https://getmailspring.com/

  • GitHub repo Postal

    📨 A fully featured open source mail delivery platform for incoming & outgoing e-mail

  • GitHub repo responsive-html-email-template

    A free simple responsive HTML email template

    Project mention: Action Mailer vs Email Templates | reddit.com/r/rails | 2021-05-30

    I use this template for all transactional emails and I'm quite happy with it: https://github.com/leemunroe/responsive-html-email-template

  • GitHub repo Mail-in-a-Box

    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.

    Project mention: Internet in a Box | news.ycombinator.com | 2021-06-20
  • GitHub repo SwiftMailer

    Comprehensive mailing tools for PHP

  • GitHub repo MailHog

    Web and API based SMTP testing

    Project mention: Authenticate With Djoser | dev.to | 2021-05-24

    MailHog (email testing tool for developers)

  • GitHub repo Mailpile

    A free & open modern, fast email client with user-friendly encryption and privacy features

    Project mention: Maddy: Composable all-in-one mail server | news.ycombinator.com | 2021-06-18
  • GitHub repo community-edition

    Free and Open Source messaging and emailing app that combines common web applications into one.

    Project mention: Rambox – Combine email add messaging apps | news.ycombinator.com | 2021-06-01
  • GitHub repo k-9

    K-9 Mail – Open Source Email App for Android

    Project mention: Funktionierende email-App für Samsung-Handy und mail.de | reddit.com/r/de_EDV | 2021-05-19
  • GitHub repo CssToInlineStyles

    CssToInlineStyles is a class that enables you to convert HTML-pages/files into HTML-pages/files with inline styles. This is very usefull when you're sending emails.

  • GitHub repo MailCatcher

    Catches mail and serves it through a dream.

    Project mention: Looking for an email that has an API to work with automation | reddit.com/r/softwaretesting | 2021-04-17

    I use mailcatcher. Open source, self hosted, has a UI and API access for retrieving sent mail.

  • GitHub repo Listmonk

    High performance, self-hosted newsletter and mailing list manager with a modern dashboard. Single binary app.

    Project mention: listmonk - Self-hosted newsletter & mailing list manager | reddit.com/r/selfhosted | 2021-06-17
  • GitHub repo Mailtrain

    Self hosted newsletter app

  • GitHub repo Mautic

    Mautic: Open Source Marketing Automation Software.

    Project mention: docker-compose 上の mautic で GeoLite2 の自動更新設定 | dev.to | 2021-06-15

    Maxmind IP lookup database cannot be downloaded anonymously anymore - mautic/mautic

  • GitHub repo Cerberus

    A few simple, but solid patterns for responsive HTML email templates and newsletters. Even in Outlook and Gmail.

    Project mention: Positioning two div boxes inline in same row in an HTML email template | reddit.com/r/learnprogramming | 2021-05-12

    Email templates are nothing but hacks, I've found. Here's the template I use for email, though I don't think it supports the layout you're going for. Try googling "email templates github" and see if any open source options have a solution.

  • GitHub repo Papercups

    Open-source live customer chat

    Project mention: Create a conversation with Elixir with real code examples | news.ycombinator.com | 2021-05-19
  • GitHub repo MailKit

    A cross-platform .NET library for IMAP, POP3, and SMTP.

    Project mention: ASP.NET Webforms user registration, email confirmation, etc using SMTP, NOT SendGrid | reddit.com/r/dotnet | 2021-05-20

    Use https://github.com/jstedfast/MailKit instead of the SmtpClient. The SmtpClient is so outdated on many points.

  • GitHub repo alertmanager

    Prometheus Alertmanager

    Project mention: Finally got a landing page built for my little lab, after much inspiration from this sub! | reddit.com/r/selfhosted | 2021-05-04

    At a high level, I use various Prometheus exporters, including node-exporter and some simple custom exporters, which can then be consumed by Grafana for dashboards, Alert Manager for sending PushOver notifications, and my own web apps for displaying custom metrics. Hope that helps :)

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2021-06-22.


What are some of the best open-source Email projects? This list will help you:

Project Stars
1 N1 24,604
2 PHPMailer 16,776
3 awesome-falsehood 15,931
4 Nodemailer 13,910
5 MJML 12,211
6 Mailspring 10,909
7 Postal 10,518
8 responsive-html-email-template 10,315
9 Mail-in-a-Box 10,214
10 SwiftMailer 9,415
11 MailHog 8,654
12 Mailpile 8,411
13 community-edition 5,940
14 k-9 5,859
15 CssToInlineStyles 5,441
16 MailCatcher 5,322
17 Listmonk 5,294
18 Mailtrain 4,814
19 Mautic 4,583
20 Cerberus 4,258
21 Papercups 4,244
22 MailKit 4,125
23 alertmanager 4,070
SaaSHub - Software Alternatives and Reviews
SaaSHub helps you find the best software and product alternatives