EMAIL / MAIL HEALTH CHECKER
// Check MX, SPF, DKIM, DMARC, MTA-STS and BIMI records for any domain
Free Email Health Checker — SPF, DKIM, DMARC, MX Record Validator
Our free email health checker analyses all the DNS records that control email delivery and security for any domain. A correctly configured email setup protects against phishing, spoofing and spam — and ensures your legitimate emails reach inboxes rather than spam folders.
What Each Record Does
- MX Records — Define which mail servers receive email for the domain. Without MX records, no email can be received.
- SPF (Sender Policy Framework) — Lists authorised mail servers allowed to send email from your domain. Prevents spoofing.
- DKIM (DomainKeys Identified Mail) — Adds a cryptographic signature to outgoing emails, allowing recipients to verify authenticity.
- DMARC (Domain-based Message Authentication) — Tells receiving servers what to do with emails that fail SPF or DKIM. Critical for preventing spoofing.
- MTA-STS — Enforces TLS encryption for email in transit. Prevents downgrade attacks.
- BIMI (Brand Indicators for Message Identification) — Displays your logo in email clients for verified senders.
Why Email Configuration Matters
Poor email configuration is the most common reason legitimate emails land in spam. Without SPF, DKIM and DMARC, your domain can be trivially spoofed by attackers to send phishing emails that appear to come from you — damaging your reputation and your recipients. A DMARC policy of p=reject with full SPF and DKIM alignment is the gold standard for email security.