A self-hosted, unified webmail client.
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Webmail GitHub Repositories (2026) · Open Source Tools
Discover the best Webmail open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
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7 matching projects · updated Nov 14, 2026
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Self-hosted mail server for your own domain: SMTP/IMAP/POP3, CardDAV/CalDAV, React webmail and admin console, one-command Docker Compose.
↑ +20 today
Monorepo hosting the proton web clients
↑ +1 today
Disposable webmail server (similar to Mailinator) with built in SMTP, POP3, RESTful servers; no DB required.
↑ +1 today
💌 Mail app for Nextcloud
↑ +1 today
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Self-hosted multi-account email client with support for JMAP/IMAP/SMTP, direct integration with Gmail and Outlook APIs. Also Contacts and Calendar. Built with Go, templ, and HTMX, SQLite for storage
↑ +1 today
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
↑ +1 today
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