Email Deliverability & DNS Security Auditor (SPF, DMARC)

Check email deliverability and DNS security for any list of domains: SPF, DKIM, DMARC, MX, DNSSEC, MTA-STS, TLS-RPT and BIMI audited in one run. Deterministic scoring, actionable findings, no API keys.

Email Deliverability Auditor — SPF, DKIM, DMARC & Blacklist

fayoussef/email-deliverability-auditor

Audit any domain's email deliverability: SPF, DKIM, DMARC, MX, MTA-STS, BIMI, DNSSEC and DNS blacklist checks with a 0-100 score and prioritized fixes.

Bulk Email Deliverability Auditor - SPF, DKIM, DMARC

technicaldost/bulk-email-deliverability-auditor

Audit SPF, DKIM, DMARC and MX for thousands of domains at once. Returns a graded deliverability score, the parsed records, and a plain-English list of what is wrong. DNS only, so it is fast and costs a fraction of a cent per domain. No API key needed.

Run an email authentication check on up to 100 domains at once. Reads public DNS for DMARC, SPF, MX and the DKIM selectors you name, parses the p, sp and RFC 9989 np policies, and returns a 0-100 score per domain with the raw records and the anti-spoofing fixes to apply first.

Bulk DNS Records Lookup - A, MX, TXT, NS, CNAME

logiover/bulk-dns-records-lookup

Look up DNS records for thousands of domains at once — A, AAAA, MX, NS, TXT, CNAME, SOA and CAA — via DNS-over-HTTPS. Ideal for email deliverability (SPF/DMARC), security audits and migrations. No API key, export to CSV or JSON.

🛡️ Audit MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI, CAA, DNSSEC, and web TLS without sending email. Get evidence-backed security and deliverability scores, prioritized fixes, and a client-ready report.

DNS, WHOIS, SPF/DMARC, SSL Domain Audit

jungle_synthesizer/dns-domain-audit

Bulk domain audit covering DNS records, WHOIS registration, SPF/DMARC/DKIM email auth, SSL certificate, and reverse DNS. No browser, no proxy -- pure Node, sub-second per domain.

Bulk-check TLS certificates for any HTTPS hosts: days-to-expiry, expiry alerts, and issuer/SAN/fingerprint change detection. Pure protocol, no scraping.

Audit a domain's SPF, DMARC, and DKIM email authentication DNS records for deliverability and security readiness.

Audit email deliverability and domain posture in bulk: MX, SPF, DKIM (common selectors), DMARC policy, DNSSEC, MTA-STS, TLS-RPT, and BIMI. Returns a 0-100 posture score, a prioritized fix list, and per-record detail. Pure DNS-over-HTTPS — no scraping, no API keys.

DMARC Record Checker - Fetch, Parse & Grade DMARC Policy

eliai/dmarc-record-checker

Check DMARC for up to 200 domains per run: policy, pct, rua/ruf reports, grade (enforced/monitor/missing) and plain-English issues. $0.0008 per domain, no start fee, failures never charged — cheaper than measured incumbents ($0.001-$0.05/domain). For security audits, deliverability and lead gen.