ZeroSMTP: Open-Source Lightweight SMTP Relay Built for Developers

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A developer has released ZeroSMTP, a lightweight open-source SMTP relay gateway aimed at simplifying email delivery for local apps, microservices, and scripts. The tool is designed as a minimal alternative to traditional Mail Transfer Agents like Postfix, which often require heavy configuration. ZeroSMTP supports log capturing, local development mail routing, and server alert triggering. It is self-hostable and available on GitHub along with official documentation and Docker configuration guides. The creator is actively seeking community feedback, feature suggestions, and pull request contributions.

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