DMARC Rollout Planner

Bulk email authentication audit. Parses SPF, DMARC, and DKIM records, returns deliverability score (0-100), and step-by-step remediation actions per domain.

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.

One-call security report card per domain — WHOIS, DNS, SPF/DMARC email auth, SSL/TLS expiry, with a posture score and grade. No login.

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.

Bulk Domain Email Security Checker

automation-lab/bulk-domain-email-security-checker

Audit SPF, DMARC, MX, and DKIM DNS posture for bulk domain lists with scores, risk flags, and raw records.

Bulk Email Deliverability Checker - SPF, DKIM, DMARC, MX

codeblix/email-deliverability-checker

Audit thousands of domains for email authentication, DNS issues, and deliverability risk. Checks SPF, DKIM, DMARC, MX, DNSSEC, MTA-STS, TLS-RPT, BIMI. No login, no proxy, no API keys needed.

Audit a domain's email deliverability: SPF, DKIM, DMARC and policy, MX and mail provider, catch-all and blacklist checks, domain age, and a 0 to 100 health score. Flat JSON, Clay ready.

Bulk DNS Lookup, SPF DMARC DKIM Email Check

thoob/dns-bulk-lookup

Resolves A, AAAA, MX, NS, TXT, CNAME, and SOA records for many domains at once over DNS-over-HTTPS (Cloudflare, with Google fallback), and parses SPF, DMARC, and optional DKIM. Deterministic and fast. Billed only per domain that returns DNS data.

Bulk Email Verifier & Finder - Mailbox Exists, SPF/DKIM/DMARC

apivault_labs/email-deliverability-checker

Bulk email verifier & finder: live mailbox check (accepted/rejected/catch-all), SPF/DKIM/DMARC, spam-trap & blacklist, typo fix, find emails by name+company. Pay only for definitive results.