📋 Email DMARC Auditor — SPF/DKIM/DMARC Bulk Check

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.

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.

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.

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.

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.

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.

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.

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.

Supernet Domain Health - Email Reputation Audit

superlativetech/supernet-domain-health

Email authentication and deliverability audit for any domain. Checks SPF, DKIM, DMARC, MX, blacklists, SSL, WHOIS, BIMI, MTA-STS — returns a 0-100 health score with actionable fixes. Sending or receiving mode. Batch thousands or query one via instant API.

Domain Lookup

greip/domain-lookup

Lookup and analyze domain names and retrieve detailed information including security status, email authentication records (SPF, DMARC, DKIM, MX, BIMI), creation date, and risk assessment. Perfect for domain verification, fraud prevention, and security analysis.