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mail-in-a-box/mailinabox

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.

Python★ 15.5kCC0-1.0GitHub ↗

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    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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    Why this match

    topics email, mail, server; language differs: Python → Go; license differs: CC0-1.0 → AGPL-3.0

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  3. postalserver/postal

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    Why this match

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  4. stalwartlabs/stalwart

    All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

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    Why this match

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    Why this match

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  6. resend/react-email

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    TypeScript★ 19.9kMITGitHub ↗

    Why this match

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  7. Foundry376/Mailspring

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

    TypeScript★ 18.0kGPL-3.0GitHub ↗

    Why this match

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    Email for AI agents — read, search, send and triage Gmail / QQ / 163 / any IMAP from the CLI or MCP. Part of the *-use family.

    JavaScript★ 48MITGitHub ↗

    Why this match

    topics email, smtp; language differs: Python → JavaScript; license differs: CC0-1.0 → MIT