SPF, DKIM and DMARC Checker (Email Authentication)

Email Validation API - Bulk Email Checker & Verifier

pink_comic/email-validation-checker

Bulk email verification and validation API for lead lists. Check syntax, MX records, disposable/free domains, role accounts, catch-all behavior, and optional SMTP signals. Clean CRM lists and assess email risk without an API key. Results do not guarantee mailbox ownership, reachability, or delivery.

Audit a TikTok creator’s audience for fake followers and bot engagement. Get a 0–100 trust score, red flags, and a partnership recommendation. Six-signal heuristic, runs in seconds.

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.

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

Bulk Email Deliverability Checker — MX, SPF, DKIM, DMARC & BIMI

logiover/bulk-email-deliverability-checker

Check email deliverability for thousands of domains in bulk. Verifies MX records, parses SPF policies, discovers DKIM selectors, parses DMARC tags and checks BIMI. Returns a detailed deliverability score per domain. No API key — ideal for cold email campaigns and email marketing audits.

Email Verifier (Syntax + MX + SMTP)

andok/email-verifier

Verify email deliverability via syntax checks, MX lookups, and a non-intrusive SMTP RCPT probe. Flags disposable domains, role accounts, and catch-all servers. $0.001/email + $0.02 start.

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 SPF, DKIM & DMARC Checker - Email Domain Health

byusuklu/email-domain-health-checker

Check any domain's email setup in seconds: MX, SPF (with lookup count), DKIM, DMARC policy, BIMI, MTA-STS and spam blocklists. Get a 0-100 score and plain-English fixes. Bulk, DNS only.

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.

🛡️ 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.