Self-hosted mail server for your own domain: SMTP/IMAP/POP3, CardDAV/CalDAV, React webmail and admin console, one-command Docker Compose.
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Mail Server GitHub Repositories (2026) · Open Source Tools
Discover the best Mail Server open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
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5 matching projects · updated Nov 12, 2026
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Free, unlimited business email on your own domains, running entirely in your free Cloudflare account.
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📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
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Hestia Control Panel | A lightweight and powerful control panel for the modern web.
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Local-first mail development environment. Point your app at localhost and inspect every message, protocol trace and delivery outcome. SMTP, IMAP, POP3 and a REST API in one self-contained binary.
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