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Verify email security configuration including SPF records, DKIM signatures, DMARC policies, and MX records. Ensure your domain is protected against email spoofing and phishing.
Best for
Use this tool when you need one sharp answer fast before opening a broader report.
The input and results are designed to stay readable and tappable on smaller screens.
This page targets both broad keywords and practical queries people use before they audit a specific domain.
Frequently asked questions
Yes — the Email Configuration Checker is 100% free with no signup, no account, and no usage limits. Just enter a URL and get instant results.
Our Email Configuration Checker runs live checks against the target website in real time. Results reflect the current state of the site at the moment you run the check — not cached or historical data.
SPF specifies which servers can send email for your domain. DKIM adds a digital signature to verify the email hasn't been tampered with. DMARC tells receiving servers what to do when SPF or DKIM fails.
The most common causes are: missing or misconfigured SPF record, no DKIM signing, no DMARC policy, or a low domain reputation. Our checker identifies all of these.
We check the DNS-level authentication (SPF, DKIM, DMARC, MX records). For inbox placement testing, you'd need to send actual test emails.