Free DKIM Checker

Check your DKIM selector and validate your domain's DKIM DNS record.

Checking DNS records…

Related MXFend tools
DKIM Inspector See exactly what DKIM public key is published and whether it's structurally safe to use. SPF Checker Check whether your SPF record is present and safe. DMARC Checker Check your DMARC policy and enforcement. Email Security Score Complete domain report for authentication, reputation, and transport security.
MXFend

Free email deliverability tools for domains.

Tools
Email Deliverability Checker SPF Checker DMARC Checker MX Checker
Guides
Knowledge Base Email auth guide Emails going to spam Domain reputation SMTP TLS MTA-STS TLS-RPT
Company
About Contact Privacy Terms Refund Policy
© 2026 MXFend. All rights reserved.