What this tool checks
Email security rests on four DNS-based pieces: SPF says which servers may send for your domain, DKIM signs your mail so it can't be tampered with, DMARC tells receivers what to do with mail that fails those checks, and MX shows where your mail is delivered. This tool checks all of them, plus common blacklists, and gives you a graded scorecard with the actual records so you know exactly what to fix.
Frequently asked questions
Why does email security matter?
Without SPF, DKIM, and DMARC, anyone can send email that appears to come from your domain. That fuels phishing and lands your real mail in spam. Getting all three right protects your brand and your deliverability.
What's a good score?
An A means SPF, DKIM, and DMARC are all present and enforcing. Most gaps are a missing or permissive DMARC policy (p=none) or no DKIM at common selectors. The scorecard shows which piece is dragging you down.
It says no DKIM found, but I have it.
DKIM uses a named selector, and this tool probes the common ones. If you use a custom selector, your DKIM may still be valid even if it isn't auto-detected here.