Bulk SPF, DKIM & DMARC Checker - Email Domain Health

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.

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 Health: SPF, DMARC, DKIM & MX Checker

cottony_brittlegill/domain-mailhealth-bulk

Bulk email deliverability and security audit: MX, SPF, DMARC and DKIM (common selectors) for up to 100,000 domains in one normalized JSON per domain, with an A-F grade and actionable issues. Failed lookups are never charged.

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.

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.

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.

Email DMARC Auditor — SPF/DKIM/DMARC Bulk Check

nexgendata/email-dmarc-auditor

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

Bulk DNS Lookup, SPF DMARC DKIM Email Check

thoob/dns-bulk-lookup

Resolves A, AAAA, MX, NS, TXT, CNAME, and SOA records for many domains at once over DNS-over-HTTPS (Cloudflare, with Google fallback), and parses SPF, DMARC, and optional DKIM. Deterministic and fast. Billed only per domain that returns DNS data.

Email & Domain Auth Checker: MX, SPF, DKIM & DMARC

apifmcpfactory/email-domain-checker

Checks an email or domain's deliverability signals from DNS alone: MX, SPF, DKIM, DMARC, plus disposable and role-address flags. No SMTP, no mailbox ping. It reports auth-record posture, not mailbox existence. $0.005 per input checked.

Bulk domain intelligence: registrar, creation and expiry dates, domain age and availability via RDAP, plus A, MX, NS and TXT records, SPF and DMARC policy. Pay only per checked domain.