Email Libraries - Page 1

The classic email sending library for PHP

PHP 19593Updated: 10 mo ago License: Weak Copyleft (LGPL-2.1)

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

JavaScript 15683Updated: 10 mo ago License: Proprietary (Proprietary)

MJML: the only framework that makes responsive-email easy

JavaScript 15325Updated: 10 mo ago License: Permissive (MIT)

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

C 14200Updated: 10 mo ago License: Strong Copyleft (GPL-3.0)

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

Ruby 12755Updated: 10 mo ago License: Permissive (MIT)

A free simple responsive HTML email template

HTML 12233Updated: 10 mo ago License: Permissive (MIT)

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.

Python 12136Updated: 10 mo ago License: Permissive (CC0-1.0)

PHP Email address validator

PHP 11122Updated: 10 mo ago License: Permissive (MIT)

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

Go 10711Updated: 10 mo ago License: Strong Copyleft (AGPL-3.0)

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

Ruby 10570Updated: 3 y ago License: Permissive (MIT)

Comprehensive mailing tools for PHP

PHP 9597Updated: 10 mo ago License: Permissive (MIT)

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

Python 8742Updated: 10 mo ago License: Proprietary (Proprietary)

K-9 Mail – Open Source Email App for Android

Kotlin 8024Updated: 10 mo ago License: Permissive (Apache-2.0)

Quickly create responsive HTML emails that work on any device and client. Even Outlook.

HTML 7708Updated: 11 mo ago License: Permissive (MIT)

Responsive transactional HTML email templates

HTML 6778Updated: 1 y ago License: Permissive (MIT)

K-9 Mail – Open Source Email App for Android

Java 6571Updated: 2 y ago License: Permissive (Apache-2.0)

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

JavaScript 6348Updated: 1 y ago License: Strong Copyleft (GPL-3.0)

Catches mail and serves it through a dream.

Ruby 5948Updated: 11 mo ago License: Permissive (MIT)

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.

PHP 5715Updated: 10 mo ago License: Permissive (BSD-3-Clause)

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

C# 5400Updated: 10 mo ago License: Permissive (MIT)

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.

TypeScript 5347Updated: 10 mo ago License: Strong Copyleft (GPL-3.0)

Find Dates, Places, Times, and More. A .js library for parsing text for specific information.

JavaScript 5330Updated: 3 y ago License: Permissive (MIT)

Self hosted newsletter app

JavaScript 5249Updated: 11 mo ago License: Strong Copyleft (GPL-3.0)

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

HTML 4751Updated: 11 mo ago License: Permissive (MIT)

Insular email distribution - mail server as Docker images

Python 4614Updated: 10 mo ago License: Proprietary (Proprietary)

A fast, highly extensible, and event driven SMTP server

JavaScript 4443Updated: 10 mo ago License: Permissive (MIT)

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

JavaScript 4331Updated: 12 mo ago License: Permissive (MIT)

✉️ Composable all-in-one mail server.

Go 4009Updated: 10 mo ago License: Strong Copyleft (GPL-3.0)

The best way to send emails in Go.

Go 3938Updated: 11 mo ago License: Permissive (MIT)

Simple, modern & fast web-based email client

PHP 3921Updated: 10 mo ago License: Permissive (MIT)

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

TypeScript 3913Updated: 10 mo ago License: Permissive (MIT)

An open source email campaign management tool for nonprofits

JavaScript 3838Updated: 1 y ago License: Permissive (BSD-3-Clause)

Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.

Rust 3825Updated: 10 mo ago License: Proprietary (Proprietary)

The email boilerplate for sending out nicely formatted messages.

HTML 3793Updated: 1 y ago License: No License (No License)

Gmail JavaScript API

JavaScript 3625Updated: 11 mo ago License: Permissive (MIT)

Beautiful responsive email templates with code as beautiful as email templates can be

HTML 3582Updated: 1 y ago License: Permissive (MIT)

Preview mail in the browser instead of sending.

Ruby 3542Updated: 11 mo ago License: Permissive (MIT)

Create, preview (browser/iOS Simulator), and send custom email templates for Node.js. Made for @forwardemail, @ladjs, @cabinjs, @spamscanner, and @breejs.

JavaScript 3523Updated: 1 y ago License: Permissive (MIT)

A Really Ruby Mail Library

Ruby 3513Updated: 1 y ago License: Permissive (MIT)

:incoming_envelope: IMAP/SMTP sync system with modern APIs

Python 3503Updated: 3 y ago License: Strong Copyleft (AGPL-3.0)

A temporary email right from your terminal written in POSIX sh

Shell 3166Updated: 10 mo ago License: Permissive (MIT)

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

CSS 3011Updated: 2 y ago License: Permissive (MIT)

Juice inlines CSS stylesheets into your HTML source.

JavaScript 2969Updated: 10 mo ago License: Permissive (MIT)

Official AngularJS web client for the ProtonMail secure email service.

JavaScript 2917Updated: 3 y ago License: Permissive (MIT)

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

JavaScript 2846Updated: 11 mo ago License: Permissive (MIT)

:mailbox: SMTP Server + Web Interface for viewing and testing emails during development.

JavaScript 2845Updated: 3 y ago License: Proprietary (Proprietary)

An automated e-mail OSINT tool

Go 2842Updated: 10 mo ago License: Permissive (MIT)

Imapsync is an IMAP transfers tool. The purpose of imapsync is to migrate IMAP accounts or to backup IMAP accounts. IMAP is one of the three current standard protocols to access mailboxes, the two others are POP3 and HTTP with webmails, webmails are often tied to an IMAP server. Upstream website is

Perl 2838Updated: 10 mo ago License: Proprietary (Proprietary)

✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat

C 2819Updated: 10 mo ago License: Strong Copyleft (GPL-2.0)

modern full-featured open source secure mail server for low-maintenance self-hosted email

Go 2681Updated: 10 mo ago License: Permissive (MIT)