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

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 DNS Audit Scraper

taroyamada/email-deliverability-portfolio-audit

Scrape domain DNS data to extract SPF, DKIM, DMARC, and BIMI records. Generate structured deliverability readiness reports for client portfolios.

DMARC, SPF & DKIM Validator

andok/dmarc-spf-dkim-validator

Validate email authentication DNS records to prevent spoofing and ensure high email deliverability for your domains.

DNS, WHOIS, SPF/DMARC, SSL Domain Audit

jungle_synthesizer/dns-domain-audit

Bulk domain audit covering DNS records, WHOIS registration, SPF/DMARC/DKIM email auth, SSL certificate, and reverse DNS. No browser, no proxy -- pure Node, sub-second per domain.

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 DNS + email + SaaS vendor profile from any domain list. Pure DNS over HTTPS (Google + Cloudflare resolvers), no scraping. Returns MX vendor (Google Workspace, M365, etc), SPF status, DMARC policy, DKIM signals, nameserver, CDN, hosting, and 25+ SaaS verification TXT signals. $0.01 per domain.

Bulk DNS analysis. A records, MX, nameservers, hosting provider, email provider, SPF/DMARC status for any domain.

DMARC & Email Security Checker

taroyamada/dns-dmarc-security-checker

Validate domain infrastructure in bulk to boost email deliverability. Extract DMARC policies, SPF records, and MX configurations to keep outreach out of spam.

Email Security Scanner

cerridwen/email-security-scanner

DNS-only email posture for any domain: MX, SPF, DMARC, DKIM probes, MTA-STS, BIMI. No email sent. Returns score + actionable tips. Batch-friendly for CRM domains and compliance snapshots.