Email Authentication & Sender Authentication — Bulk DMARC

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

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

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

SPF DMARC Checker - Email Authentication Data

benthepythondev/spf-dmarc-checker

Check SPF and DMARC DNS records for domains and export email authentication policies, rua/ruf reports and raw TXT records.

SPF, DKIM & DMARC Checker

gifted_wagon/dns-email-auth-auditor

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

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

🛡️ Email Deliverability Checker - SPF, DMARC, DKIM Bulk

renzomacar/domain-health-enricher

Bulk email deliverability checker and domain enricher: MX + provider, SPF, DMARC + policy, DKIM, domain age (RDAP), HTTPS, plus a 0-100 email-security score and deliverability risk. Score prospect domains before cold outreach - not just your own - to protect sender reputation. No API key.

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.

DMARC Report Analyzer — Email Security & SPF/DKIM

perryay/dmarc-report-analyzer

Parse and analyze DMARC forensic and aggregate reports. Get SPF/DKIM alignment, identify spoofing attempts, and monitor email authentication health.