Novu 是一个开源的通知基础架构，帮组开发者快速实现产品通知功能，而无需不断地重新发明轮子。
#Awesome#😱 Falsehoods Programmers Believe in
💌 An extensible desktop mail app built on the modern web. Forks welcome!
PHPMailer 是一款流行、功能齐全的 PHP 电子邮件发送库
MJML: the only framework that makes responsive-email easy
✉️ Send e-mails with Node.JS – easy as cake!
一个漂亮快速的Mac、Windows、Linux 邮箱客户端
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.
A free simple responsive HTML email template
Logto 帮助你在数分钟内构建登录注册体验和用户身份体系的开源项目。在安全、优雅、灵活、高效的同时，为你的用户提供愉悦的登录体验。
Holehe 是一个用于批量检测邮箱账号是否在某些网站上已注册的工具
Low code web framework for real world applications, in Python and Javascript
The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast.
Experience email the way you want with 0 – the first open source email app that puts your privacy and safety first. Join the discord: https://discord.gg/0email
Prometheus Alertmanager
#安全#Tuta 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.