DKIM Record Checker

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.

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.

Bulk Email Deliverability Checker — MX, SPF, DKIM, DMARC & BIMI

logiover/bulk-email-deliverability-checker

Check email deliverability for thousands of domains in bulk. Verifies MX records, parses SPF policies, discovers DKIM selectors, parses DMARC tags and checks BIMI. Returns a detailed deliverability score per domain. No API key — ideal for cold email campaigns and email marketing audits.

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

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

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.

Check robots.txt, llms.txt, sitemap hints, and AI crawler blocking rules for websites and domains.

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 DNS lookup API for domain records. Check A, AAAA, MX, NS, TXT, CNAME, SOA, and SRV records across many domains for email deliverability, SPF/DKIM/DMARC checks, DNS migrations, security audits, and infrastructure monitoring.