What are the best Mail Gateway repositories on GitHub?

The top-ranked Mail Gateway open source repositories include tokencanopy/e2a, craigmccaskill/posthorn, tracked and evaluated by community adoption, stars, and code commits.

How do I find trending Mail Gateway open source tools?

Browse this curated Mail Gateway directory to monitor real-time GitHub star velocity, latest code releases, and rising developer tools updated daily.

Are Mail Gateway GitHub repositories free and open source?

Most Mail Gateway projects listed here are distributed under open source licenses (such as MIT, Apache 2.0, or GPL). Always check individual project repositories for exact license terms.

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Mail Gateway GitHub Repositories (2026) · Open Source Tools

Discover the best Mail Gateway open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.

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2 matching projects · updated Oct 12, 2026 How we rank ↗

#1 TRENDING tokencanopy/e2a Go NEW 2026

Open-source email API for applications and AI agents. Managed hosting at e2a.dev, or self-host with Docker.

◇ ai-agents ◇ email ◇ email-agent ◇ email-agent-interface

27 ↑ +1 today

193

#2 TRENDING craigmccaskill/posthorn Go NEW 2026

Self-hosted email gateway between your apps and a transactional mail provider (Postmark, Resend, Mailgun, AWS SES, or outbound-SMTP). Three ingress shapes (HTTP form, HTTP API, SMTP). One Docker container, one TOML config.

◇ docker ◇ email ◇ email-gateway ◇ go

12 ↑ +1 today

214

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Mail Gateway GitHub Repositories (2026) · Open Source Tools

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