Email Authentication Auditor — SPF, DKIM, DMARC in Bulk

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

Email Deliverability Auditor — SPF, DKIM, DMARC & Blacklist

fayoussef/email-deliverability-auditor

Audit any domain's email deliverability: SPF, DKIM, DMARC, MX, MTA-STS, BIMI, DNSSEC and DNS blacklist checks with a 0-100 score and prioritized fixes.

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.

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.

🛡️ Audit MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI, CAA, DNSSEC, and web TLS without sending email. Get evidence-backed security and deliverability scores, prioritized fixes, and a client-ready report.

Bulk Email Deliverability Auditor - SPF, DKIM, DMARC

technicaldost/bulk-email-deliverability-auditor

Audit SPF, DKIM, DMARC and MX for thousands of domains at once. Returns a graded deliverability score, the parsed records, and a plain-English list of what is wrong. DNS only, so it is fast and costs a fraction of a cent per domain. No API key needed.

Audit email deliverability and domain posture in bulk: MX, SPF, DKIM (common selectors), DMARC policy, DNSSEC, MTA-STS, TLS-RPT, and BIMI. Returns a 0-100 posture score, a prioritized fix list, and per-record detail. Pure DNS-over-HTTPS — no scraping, no API keys.

Audit up to 1,000 public domains for MTA-STS policy reachability, MX coverage, TLS-RPT, DMARC enforcement, SPF record count, MX, and BIMI readiness.

Bulk Email Verifier — MX, SMTP & Disposable Detection at Scale

ryanclinton/bulk-email-verifier

Verify email deliverability in bulk — MX records, live SMTP mailbox checks, disposable domain detection (55,000+ domains), role-based flagging, catch-all detection, and confidence scores. $0.005/email, no subscription.

MX Record Checker

automation-lab/mx-record-checker

This actor checks MX records for domains to identify email hosting providers and mail server configuration. It queries MX records, sorts by priority, and detects providers (Google Workspace, Microsoft 365, ProtonMail, etc.). Useful for email deliverability auditing and provider identification.

Bulk Email Validator — Verify & Clean Lists API

nexgendata/email-validator

Validate thousands of emails in bulk with DNS MX verification, syntax checking, disposable detection & free provider ID. Cheaper than ZeroBounce ($0.005 vs $0.008/email). Clean lists before campaigns to protect sender reputation.