Check DKIM public keys from the command line: finds selectors of common mail providers, decodes RSA/Ed25519 keys, reports key length, revoked and testing keys and syntax errors. Zero-dependency Node.js CLI, library and GitHub Action. Free online version by PromoPilot.
nodejs dns cli spf dkim dmarc email-security email-deliverability email-authentication github-action dkim-record dkim-checker promopilot dkim-selector
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Updated
Oct 27, 2026 - JavaScript