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.

Bulk Email Health: SPF, DMARC, DKIM & MX Checker

cottony_brittlegill/domain-mailhealth-bulk

Bulk email deliverability and security audit: MX, SPF, DMARC and DKIM (common selectors) for up to 100,000 domains in one normalized JSON per domain, with an A-F grade and actionable issues. Failed lookups are never charged.

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.

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 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 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.

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

DNS Email Authentication Auditor

gifted_wagon/dns-email-auth-auditor

Audit MX, SPF, DMARC, and optional DKIM selectors with normalized DNS evidence and actionable findings.