The open-source notification Inbox infrastructure. E-mail, SMS, Push and Slack Integrations.

😱 Falsehoods Programmers Believe in

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

The classic email sending library for PHP

💌 Build and send emails using React

MJML: the only framework that makes responsive-email easy

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

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

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.

BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr

A free simple responsive HTML email template

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

🧑‍🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.

PHP Email address validator

一键自动化 下载、安装、激活 Office 的利器。

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.

Experience email the way you want with Mail0 – the first open source email app that puts your privacy and safety first. Join the discord: https://mail0.link/discord

The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.

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

Comprehensive mailing tools for PHP