Email Domain Auth Auditor: SPF, DKIM, DMARC, MX, BIMI

Verify emails in bulk without sending mail: syntax, MX, SMTP mailbox probe, catch-all, disposable, role, free & SPF/DMARC/DKIM. Get deliverable/undeliverable/risky verdict + 0-100 score. Clean your lead list before you send. No API key.

Find business email addresses and contacts for a list of company domains. Enter domains, choose the roles you want, and get verified emails in bulk with automatic batching and rate-limit retries.

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.

Email Domain Security Auditor — $0.50/1K

scrapesignal_labs/email-domain-security-auditor

Audit MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI, DNS, provider, issues, and readiness score for domain lists.

Bulk-audit email authentication for any list of domains or emails: SPF (with the 10-DNS-lookup limit check), DMARC policy, DKIM across 45 common selectors, BIMI, MTA-STS, TLS-RPT and mail provider. Score, A-F grade and concrete fixes 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 Validator — MX, Format & Disposable Check

maged120/email-validator

Validate email addresses in bulk. Checks format validity, domain existence, MX record resolution, and disposable email domain detection — clean your mailing list before sending.

Email Validator — Bulk Email Verification & Checker

scrapepilot/email-validator----bulk-email-verification-checker

Validate any email list in bulk — syntax check, MX record lookup, and SMTP reachability test. Get quality score (high/medium/low), result classification, and free provider detection per address. Checkpoint resume on abort. $7.99/month. 2-hour free trial.

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.

Verify email addresses in bulk. Check if emails exist, detect disposable emails, validate MX records. Perfect for lead validation, list cleaning, and reducing bounce rates. Supports CSV input and exports clean/invalid email lists.