The Top 285 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 285 Email Open Source Projects

Categories > Messaging > Email

Nylas Mail ⭐ 24,579

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

Phpmailer ⭐ 16,057

The classic email sending library for PHP

Awesome Falsehood ⭐ 15,194

😱 Falsehoods Programmers Believe in

Nodemailer ⭐ 13,388

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

Mjml ⭐ 11,528

MJML: the only framework that makes responsive-email easy

Responsive Html Email Template ⭐ 9,831

A free simple responsive HTML email template

Mailinabox ⭐ 9,809

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.

Mailspring ⭐ 9,773

💌 A beautiful, fast and maintained fork of @Nylas Mail by one of the original authors.

Emailvalidator ⭐ 9,734

PHP Email address validator

Swiftmailer ⭐ 9,258

Comprehensive mailing tools for PHP

Community Edition ⭐ 5,733

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 ⭐ 4,123

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

Mailkit ⭐ 3,827

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

Mail For Good ⭐ 3,808

An open source email campaign management tool for nonprofits

Alertmanager ⭐ 3,720

Prometheus Alertmanager

Tutanota ⭐ 3,707

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

Email Templates ⭐ 3,020

📫 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 ⭐ 2,970

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

Juice ⭐ 2,467

Juice inlines CSS stylesheets into your HTML source.

React Email Editor ⭐ 2,453

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

Mailu ⭐ 2,440

Insular email distribution - mail server as Docker images

Papercups ⭐ 2,434

Open-source live customer chat

Learn To Send Email Via Google Script Html No Server ⭐ 2,418

✉️ 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 ⭐ 2,268

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

Hermes ⭐ 2,154

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

Wmail ⭐ 2,095

The missing desktop client for Gmail & Google Inbox

Awesome Newsletters ⭐ 2,056

A list of amazing Newsletters

Frappe ⭐ 2,030

Low Code Open Source Framework in Python and JS

Yagmail ⭐ 1,942

Send email in Python conveniently for gmail using yagmail

0x4447_product_s3_email ⭐ 1,807

📫 A serverless email server on AWS using S3 and SES

Notifme Sdk ⭐ 1,790

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

Free Email Forwarding ⭐ 1,768

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

Modoboa ⭐ 1,718

Mail hosting made simple

Papercut Smtp ⭐ 1,712

Papercut SMTP -- The Simple Desktop Email Server

Magma ⭐ 1,688

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.

Striker ⭐ 1,666

Striker is an offensive information and vulnerability scanner.

Fairemail ⭐ 1,569

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

Bamboo ⭐ 1,549

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

H8mail ⭐ 1,477

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

Fluentemail ⭐ 1,395

.NET Core email sending

Mosaico ⭐ 1,369

Mosaico - Responsive Email Template Editor

Rspamd ⭐ 1,366

Rapid spam filtering system.

Premailer Rails ⭐ 1,361

CSS styled emails without the hassle.

Awesome Emails ⭐ 1,330

✉️ An awesome list of resources to build better emails.

Aws Lambda Ses Forwarder ⭐ 1,263

Serverless email forwarding using AWS Lambda and SES

Mailchecker ⭐ 1,238

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

Sendgrid Php ⭐ 1,231

The Official Twilio SendGrid Led, Community Driven PHP API Library

Mimekit ⭐ 1,192

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

Waveboxapp ⭐ 1,189

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

Sendgrid Python ⭐ 1,084

The Official Twilio SendGrid Led, Community Driven Python API Library

Django Anymail ⭐ 1,069

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

Brazilian Utils ⭐ 978

Utils library for specific Brazilian businesses

Cuttlefish ⭐ 956

Transactional email server with a lovely web interface

Fiercephish ⭐ 941

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.

Trumail ⭐ 929

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

Mysigmail ⭐ 913

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

Beautymail ⭐ 906

Send beautiful HTML emails with Laravel

Anonaddy ⭐ 905

Anonymous email forwarding

Compose, deliver and test your emails easily in Elixir

Bojler is an email framework

Node Html To Text ⭐ 855

Advanced html to text converter

Disposable Email Domains ⭐ 852

a list of disposable and temporary email address domains

The SimpleLogin back-end

Hawkpost ⭐ 822

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

Sendgrid Csharp ⭐ 820

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

Kanmail ⭐ 819

📥 An email client that functions like a kanban board.

Dank Selfhosted ⭐ 794

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

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

Bootstrap Email ⭐ 733

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

Sendgrid Go ⭐ 699

The Official Twilio SendGrid Led, Community Driven Golang API Library

Truemail ⭐ 692

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

Python O365 ⭐ 687

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

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

Php Mime Mail Parser ⭐ 666

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

Object-oriented, fully tested PHP IMAP library

a mailer library for Rust

Deltachat Android ⭐ 641

Email-based instant messaging for Android.

Oh My Email ⭐ 599

📪 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

Terminal-based Mail User Agent

The Mailer component helps sending emails

Exim Mail Transport Agent - source, testsuite and documentation

Dovecot mail server

Responsive Html Email Signature ⭐ 515

Template generator for (responsive) emails & email signatures ✨

Thunderbird Conversations ⭐ 506

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.

Socialscan ⭐ 504

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

Letter_opener_web ⭐ 502

A web interface for browsing Ruby on Rails sent emails

Sendgrid Ruby ⭐ 502

The Official Twilio SendGrid Led, Community Driven Ruby API Library

Premailer.net ⭐ 494

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

Asynchronous email client for your terminal

Mfcmapi ⭐ 476

Nylas Mail ⭐ 471

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

A Python Mail Server

Glass Isc Dhcp ⭐ 467

Glass - ISC DHCP Server Interface

Astroid ⭐ 464

A graphical threads-with-tags style, lightweight and fast, e-mail client for Notmuch

Deltachat Desktop ⭐ 464

Email-based instant messaging for Desktop.

Check If Email Exists ⭐ 450

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

Gatsby Mail ⭐ 446

A Gatsby email *application*

1-100 of 285 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