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The open-source notification Inbox infrastructure. E-mail, SMS, Push and Slack Integrations.
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Dec 17, 2025 - TypeScript
😱 Falsehoods Programmers Believe in
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Nov 5, 2025
💌 An extensible desktop mail app built on the modern web. Forks welcome!
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Nov 24, 2022 - JavaScript
The classic email sending library for PHP
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Dec 8, 2025 - PHP
MJML: the only framework that makes responsive-email easy
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Dec 15, 2025 - JavaScript
✉️ Send e-mails with Node.JS – easy as cake!
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Nov 27, 2025 - JavaScript
💌 A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
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Nov 10, 2025 - JavaScript
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.
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Jul 28, 2025 - Python
A free simple responsive HTML email template
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Aug 20, 2024 - HTML
Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)
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Dec 17, 2025 - Kotlin
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
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Dec 11, 2025 - Go
🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC.
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Dec 18, 2025 - TypeScript
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
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Sep 4, 2025 - TypeScript
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.
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Sep 10, 2024 - Python
Low code web framework for real world applications, in Python and Javascript
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Dec 17, 2025 - Python
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