In simple English
This tool checks if an incoming email is genuine or fake. It reads email security records such as SPF, DKIM, and DMARC to verify senders. Developers use it inside Node.js programs or through a command-line tool. It runs locally and needs no external helper applications installed on your server. It costs nothing to use, as it is open-source software.
What it is
A TypeScript library and command-line utility for email authentication protocols. It supports verification and signing for SPF, DKIM, DMARC, ARC, BIMI, and MTA-STS.
What it is good for
Solo builders and developers who need to verify incoming emails or sign outgoing messages in a Node.js application.
- Runs entirely in Node.js with no native dependencies required.
- Includes a command-line utility for manual checks.
- Supports modern experimental protocols like DKIM2 and BIMI.
- Requires familiarity with email protocols and Node.js programming.
- Custom licence terms require checking if used commercially.
- Network requests for DNS lookups can slow down batch processing.
Writing custom email verification logic or relying on external mail server plugins
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npm install mailauth