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from $2.10 / 1,000 domain auditeds

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SPF, DKIM & DMARC Checker

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Audit MX, SPF, DMARC, and optional DKIM selectors with normalized DNS evidence and actionable findings.

Pricing

from $2.10 / 1,000 domain auditeds

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0.0

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Developer

Michael Olmos

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MX Lookup — Email DNS, SPF, DKIM & DMARC

junipr/mx-lookup

Check MX, SPF, DKIM, DMARC, TXT, CAA, and email DNS records in bulk with validation findings and deliverability diagnostics.

junipr

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.

cottony_brittlegill

Bulk Email Deliverability Checker (MX/SPF/DMARC/DKIM)

weiseer/email-deliverability-checker

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.

wei seer

Email Security DNS Validator (DMARC/SPF/DKIM)

sootesting/email-security-dns-validator

Validate email security DNS records for any domain: DMARC, SPF, DKIM. Outputs structured validation results. Pay-per-event.

soot

Domain DNS & Email Policy Monitor - SPF, DMARC, MX

maydit/domain-dns-email-monitor

Read public DNS records and SPF, DMARC, MX and supplied DKIM selectors. Compare complete observations over time with per-query errors. No API key or mailbox access required.

Brandt May

Email Deliverability Auditor — SPF DKIM DMARC BIMI

q_services/email-deliverability-auditor

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

Q Services

Email Security Audit (SPF, DMARC, DKIM, MX)

maged120/email-security-audit

Audit any domain's email security in bulk: SPF, DMARC, DKIM, MX, MTA-STS and BIMI, with a 0-100 score, spoofing risk and plain-English fixes.

Maged

SPF DKIM DMARC Audit & Bulk DMARC Checker

davidbenittah/dmarc-rfc9989-auditor

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.

David

Email Deliverability & DNS Security Auditor (SPF, DKIM, DMARC)

plotbench/email-dns-security-auditor

Check email deliverability and DNS security for any list of domains: SPF, DKIM, DMARC, MX, DNSSEC, MTA-STS, TLS-RPT and BIMI audited in one run. Deterministic scoring, actionable findings, no API keys.

Plotbench Studio

Email Security Checker — SPF, DKIM, DMARC & MX Audit

factpipe/email-security-checker

Audit any domain's email authentication: SPF (lookups, -all), DMARC policy, DKIM keys, MX, MTA-STS and TLS-RPT, with a 0-100 score and fix list. Bulk domains, no key. $3 per 1,000 domains.