1,089 services carry this tag in their source record. Tags come from the provider, not from us — a tag is a claim about what the service does, not proof that it does it well.
Paid email header forgery/anomaly detector (cycle 104) — accepts POST text/plain raw email OR GET ?header=<url-encoded RFC822> OR GET ?url=<.eml URL>; scores 13 forgery/anomaly patterns: From/Reply-To/Return-Path/Sender...
Paid llms.txt provenance / author fingerprint (cycle 102) — extracts H1 + byline + contact emails + @-handles from llms.txt body, cross-references the same email against /.well-known/security.txt Contact: field (RFC 9116...
Paid RFC822 email-header forensics (cycle 101) — POST text/plain raw email source OR pass ?header=<RFC822> (256KB cap); folds continuation lines, parses per-Received hop (from/by/with-protocol/id/for-address/ips/delay/ti...
Paid bulk-sender email-deliverability verdict (cycle 100) — composes MX + SPF + DKIM + DMARC + MTA-STS + TLS-RPT + provider fingerprint into a single 0-100 deliverability score with A-F grade and findings[]. Different fr...
Paid comprehensive DNS audit — parallel A/AAAA/MX/NS/TXT/CAA/SOA/DS queries via Cloudflare DoH, email-auth rollup (SPF/DKIM/DMARC + bulk-sender Gmail/Yahoo compliance), nameserver diversity, CAA policies, DNSSEC DS hint,...
Paid domain contactability audit — email/phone/physical-address/contact-page/social-profile/live-chat/contact-form detection with contactability_score 0-100 A-F grade via x402
Paid composite email-auth deliverability score (SPF + DKIM + DMARC + MTA-STS + BIMI rollup, A-F grade, post-Feb-2024 Gmail/Yahoo bulk-sender compliance check) via x402
DMARC check for a domain: finds the TXT record, policy mode and aggregate-reporting signal for email trust decisions.
email deliverability and spoofing check from DNS: MX, SPF and DMARC records with concise risk flags.