First public release of the dependency-free Mail Domain Check CLI.
- Checks MX, SPF, DKIM, DMARC, PTR, MTA-STS, TLS-RPT, and CAA
- Supports JSON output and Chinese text output
- Requires Node.js 20 or newer
- Sends only the supplied public domain, selector, and optional sending IP to the public scan API
- Includes a directly inspectable single-file CLI and an npm-format package archive