The Top 301 Email Open Source Projects

Awesome Open Source

Awesome Open Source

Combined Topics

Advertising 📦 10

Application Programming Interfaces 📦 124

Applications 📦 192

Artificial Intelligence 📦 78

Blockchain 📦 73

Build Tools 📦 113

Cloud Computing 📦 80

Code Quality 📦 28

Collaboration 📦 32

Command Line Interface 📦 49

Community 📦 83

Companies 📦 60

Compilers 📦 63

Computer Science 📦 80

Configuration Management 📦 42

Content Management 📦 175

Control Flow 📦 213

Data Formats 📦 78

Data Processing 📦 276

Data Storage 📦 135

Economics 📦 64

Frameworks 📦 215

Graphics 📦 110

Hardware 📦 152

Integrated Development Environments 📦 49

Learning Resources 📦 166

Libraries 📦 129

Lists Of Projects 📦 22

Machine Learning 📦 347

Mapping 📦 64

Marketing 📦 15

Mathematics 📦 55

Messaging 📦 98

Networking 📦 315

Operating Systems 📦 89

Operations 📦 121

Package Managers 📦 55

Programming Languages 📦 245

Runtime Environments 📦 100

Science 📦 42

Security 📦 396

Social Media 📦 27

Software Architecture 📦 72

Software Development 📦 72

Software Performance 📦 58

Software Quality 📦 133

Text Editors 📦 49

Text Processing 📦 136

User Interface 📦 330

User Interface Components 📦 514

Version Control 📦 30

Virtualization 📦 71

Web Browsers 📦 42

Web Servers 📦 26

Web User Interface 📦 210

The Top 301 Email Open Source Projects

Categories > Messaging > Email

Nylas Mail ⭐ 24,604

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

Phpmailer ⭐ 16,479

The classic email sending library for PHP

Awesome Falsehood ⭐ 15,604

😱 Falsehoods Programmers Believe in

Nodemailer ⭐ 13,696

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

Mjml ⭐ 11,897

MJML: the only framework that makes responsive-email easy

Mailspring ⭐ 10,522

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

Responsive Html Email Template ⭐ 10,118

A free simple responsive HTML email template

Mailinabox ⭐ 10,047

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.

Emailvalidator ⭐ 9,989

PHP Email address validator

Swiftmailer ⭐ 9,374

Comprehensive mailing tools for PHP

Community Edition ⭐ 5,843

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

K-9 Mail – Open Source Email App for Android

HEML is an open source markup language for building responsive email.

Cerberus ⭐ 4,182

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

Mailkit ⭐ 4,019

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

Alertmanager ⭐ 3,911

Prometheus Alertmanager

Tutanota ⭐ 3,887

Tutanota is an email client with a strong focus on security and privacy that lets you encrypt emails on all your devices.

Mail For Good ⭐ 3,829

An open source email campaign management tool for nonprofits

Email Templates ⭐ 3,104

📫 Create, preview, and send custom email templates for Node.js. Highly configurable and supports automatic inline CSS, stylesheets, embedded images and fonts, and much more!

Grunt Email Workflow ⭐ 2,977

A Grunt workflow for designing and testing responsive HTML email templates with SCSS.

React Email Editor ⭐ 2,753

Drag-n-Drop Email Editor Component for React.js

Mailu ⭐ 2,613

Insular email distribution - mail server as Docker images

Juice ⭐ 2,507

Juice inlines CSS stylesheets into your HTML source.

Learn To Send Email Via Google Script Html No Server ⭐ 2,498

✉️ An Example of using an HTML form (e.g: "Contact Us" on a website) to send Email without a Backend Server (using a Google Script) perfect for static websites that need to collect data.

Sendgrid Nodejs ⭐ 2,331

The Official Twilio SendGrid Led, Community Driven Node.js API Library

Frappe ⭐ 2,280

Low code web framework for real world applications, in Python and Javascript

Hermes ⭐ 2,238

Golang package that generates clean, responsive HTML e-mails for sending transactional mail

Awesome Newsletters ⭐ 2,180

A list of amazing Newsletters

Wmail ⭐ 2,093

The missing desktop client for Gmail & Google Inbox

Yagmail ⭐ 1,988

Send email in Python conveniently for gmail using yagmail

Fairemail ⭐ 1,952

Fully featured, open source, privacy friendly email app for Android

Free Email Forwarding ⭐ 1,849

The best free email forwarding for custom domains. Visit our website to get started (SMTP server)

Papercut Smtp ⭐ 1,841

Papercut SMTP -- The Simple Desktop Email Server

0x4447_product_s3_email ⭐ 1,831

📫 A serverless email server on AWS using S3 and SES

Notifme Sdk ⭐ 1,808

A Node.js library to send all kinds of transactional notifications.

Modoboa ⭐ 1,789

Mail hosting made simple

Striker ⭐ 1,726

Striker is an offensive information and vulnerability scanner.

Magma ⭐ 1,705

The magma server daemon, is an encrypted email system with support for SMTP, POP, IMAP, HTTP and MOLTEN,. Additional support for DMTP and DMAP is currently in active development.

H8mail ⭐ 1,682

Email OSINT & Password breach hunting tool, locally or using premium services. Supports chasing down related email

Bamboo ⭐ 1,615

Testable, composable, and adapter based Elixir email library for devs that love piping.

Fluentemail ⭐ 1,611

All in one email sender for .NET. Supports popular senders (SendGrid, MailGun, etc) and Razor templates.

Awesome Emails ⭐ 1,403

✉️ An awesome list of resources to build better emails.

Rspamd ⭐ 1,400

Rapid spam filtering system.

Mosaico ⭐ 1,394

Mosaico - Responsive Email Template Editor

Premailer Rails ⭐ 1,386

CSS styled emails without the hassle.

Aws Lambda Ses Forwarder ⭐ 1,299

Serverless email forwarding using AWS Lambda and SES

Sendgrid Php ⭐ 1,265

The Official Twilio SendGrid Led, Community Driven PHP API Library

Mailchecker ⭐ 1,258

📫 Cross-language temporary (disposable/throwaway) email detection library. Covers 33600 fake email providers.

Mimekit ⭐ 1,225

A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.

Waveboxapp ⭐ 1,199

Wavebox Classic has been updated to Wavebox 10. Learn more Wavebox.io

Sendgrid Python ⭐ 1,133

The Official Twilio SendGrid Led, Community Driven Python API Library

Django Anymail ⭐ 1,123

Django email backends and webhooks for Amazon SES, Mailgun, Mailjet, Postmark, SendGrid, Sendinblue, SparkPost and more

The SimpleLogin back-end

Anonaddy ⭐ 1,064

Anonymous email forwarding

Brazilian Utils ⭐ 1,033

Utils library for specific Brazilian businesses

Cuttlefish ⭐ 993

Transactional email server with a lovely web interface

Fiercephish ⭐ 967

FiercePhish is a full-fledged phishing framework to manage all phishing engagements. It allows you to track separate phishing campaigns, schedule sending of emails, and much more.

Compose, deliver and test your emails easily in Elixir

Trumail ⭐ 935

✉️ ✅ A Fast and Free Email Verification API written in Go

Beautymail ⭐ 931

Send beautiful HTML emails with Laravel

Mysigmail ⭐ 928

UI Email Signature Generator - Make easy to create your email signature

Bojler is an email framework

Disposable Email Domains ⭐ 887

a list of disposable and temporary email address domains

Node Html To Text ⭐ 881

Advanced html to text converter

Mailtrackerblocker ⭐ 849

Email tracker, read receipt and spy pixel blocker plugin for macOS Apple Mail

Hawkpost ⭐ 843

Generate links that users can use to submit messages encrypted with your public key.

Sendgrid Csharp ⭐ 840

The Official Twilio SendGrid Led, Community Driven C#, .NetStandard, .NetCore API Library

Kanmail ⭐ 836

📥 An email client that functions like a kanban board.

Dank Selfhosted ⭐ 800

Automated solution for hosting email, web, DNS, XMPP, and ZNC on OpenBSD.

Bootstrap Email ⭐ 792

Bootstrap 4 (and soon 5) stylesheet, compiler, and inliner for responsive and consistent emails with the Bootstrap syntax you know and love.

A curses threads-with-tags style email client (mailing list: [email protected])

Python O365 ⭐ 760

A simple python library to interact with Microsoft Graph and Office 365 API

A dead simple Go library for sending notifications to various messaging services.

a mailer library for Rust

Truemail ⭐ 721

🚀 Configurable framework agnostic plain Ruby 📨 email validator/verifier. Verify email via Regex, DNS and SMTP. Be sure that email address valid and exists.

Sendgrid Go ⭐ 720

The Official Twilio SendGrid Led, Community Driven Golang API Library

What did I do on February 14th 2007? Visualize your (digital) life in Org-mode

Deltachat Android ⭐ 712

Email-based instant messaging for Android.

Php Mime Mail Parser ⭐ 693

A fully tested email parser for PHP 7.2+ (mailparse extension wrapper).

Object-oriented, fully tested PHP IMAP library

holehe allows you to check if the mail is used on different sites like twitter, instagram and will retrieve information on sites with the forgotten password function.

The Mailer component helps sending emails

Oh My Email ⭐ 613

📪 可能是最小的 Java 邮件发送库了，支持抄送、附件、模板等功能。

A Domain Name & Email Address Collection Tool

Himalaya ⭐ 598

📫 Minimalist CLI email client, written in Rust.

Terminal-based Mail User Agent

Dovecot mail server

Socialscan ⭐ 551

Python library and CLI for accurately querying username and email usage on online platforms

Exim Mail Transport Agent - source, testsuite and documentation

Deltachat Desktop ⭐ 534

Email-based instant messaging for Desktop.

Responsive Html Email Signature ⭐ 530

Template generator for (responsive) emails & email signatures ✨

Sendgrid Ruby ⭐ 529

The Official Twilio SendGrid Led, Community Driven Ruby API Library

Thunderbird Conversations ⭐ 517

An extension for Thunderbird that allows you to view threads as "real" conversations, including your own emails. This extension also adds a bunch of useful UI features in the conversation view.

Letter_opener_web ⭐ 517

A web interface for browsing Ruby on Rails sent emails

Check If Email Exists ⭐ 517

Check if an email address exists without sending any email, written in Rust.

Mfcmapi ⭐ 514

Premailer.net ⭐ 506

C# library that moves your stylesheets to inline style attributes, for maximum compatibility with E-mail clients.

Glass Isc Dhcp ⭐ 490

Glass - ISC DHCP Server Interface

Asynchronous email client for your terminal

A Python Mail Server

1-100 of 301 projects

Advertising 📦 10

Application Programming Interfaces 📦 124

Applications 📦 192

Artificial Intelligence 📦 78

Blockchain 📦 73

Build Tools 📦 113

Cloud Computing 📦 80

Code Quality 📦 28

Collaboration 📦 32

Command Line Interface 📦 49

Community 📦 83

Companies 📦 60

Compilers 📦 63

Computer Science 📦 80

Configuration Management 📦 42

Content Management 📦 175

Control Flow 📦 213

Data Formats 📦 78

Data Processing 📦 276

Data Storage 📦 135

Economics 📦 64

Frameworks 📦 215

Graphics 📦 110

Hardware 📦 152

Integrated Development Environments 📦 49

Learning Resources 📦 166

Libraries 📦 129

Lists Of Projects 📦 22

Machine Learning 📦 347

Mapping 📦 64

Marketing 📦 15

Mathematics 📦 55

Messaging 📦 98

Networking 📦 315

Operating Systems 📦 89

Operations 📦 121

Package Managers 📦 55

Programming Languages 📦 245

Runtime Environments 📦 100

Science 📦 42

Security 📦 396

Social Media 📦 27

Software Architecture 📦 72

Software Development 📦 72

Software Performance 📦 58

Software Quality 📦 133

Text Editors 📦 49

Text Processing 📦 136

User Interface 📦 330

User Interface Components 📦 514

Version Control 📦 30

Virtualization 📦 71

Web Browsers 📦 42

Web Servers 📦 26

Web User Interface 📦 210