Email Deliverability & DNS Security Auditor (SPF, DMARC)

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

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.

Validate email security DNS records for any domain: DMARC, SPF, DKIM. Outputs structured validation results. Pay-per-event.

Check domains in bulk for DNS and email authentication: A, AAAA, MX, NS, TXT records plus SPF, DMARC and DKIM with policy parsing, an email security score and inferred DNS and mail provider. For deliverability audits, security assessments and B2B technology targeting.

Domain DNS Footprint Auditor

glowing_glove/domain-dns-footprint-auditor

Audit domain DNS, MX, TXT, SPF, DMARC, nameserver, homepage, and security.txt signals for sales, security, and deliverability workflows.

Email Security & Deliverability Analyzer — SPF DKIM DMARC

perryay/email-security-analyzer

Enterprise email domain security audit: SPF/DKIM/DMARC/BIMI/MTA-STS DNS validation, 50+ blacklist scans, MX record analysis with IP resolution, deliverability scoring (0-100), and detailed remediation advice.

Domain Security & Email Deliverability — DNS, SPF, DMARC, DKIM

ryanclinton/dns-record-lookup

Audit a domain portfolio for email spoofing, broken SPF, DMARC enforcement, DNSSEC and shadow-SaaS senders. Returns a posture score, what to fix first, vendor dependencies and drift alerts — not just records. Bulk DNS / SPF / DMARC / DKIM lookup, no API keys.

MX Lookup — Email DNS, SPF, DKIM & DMARC

junipr/mx-lookup

Check MX, SPF, DKIM, DMARC, TXT, CAA, and email DNS records in bulk with validation findings and deliverability diagnostics.

Audit any domain's email authentication (MX, SPF, DMARC, BIMI, DKIM) and get a deliverability score with actionable issues.

Bulk-check domains for email setup & authentication over DNS: MX + provider, SPF, DMARC policy, DKIM selectors, with a deliverability score. One JSON row per domain.