spf: dmarc: blacklist: dnssec: mx: to jump straight to that check.Why this beats running ten separate lookups
Checking whether a domain's email is actually healthy normally means running MX, SPF, DKIM, DMARC, blacklist, DNSSEC and TLS lookups one by one and assembling the verdict in your head. This composes them into a single weighted score across four areas, Mail Deliverability, DNS Health, Reputation and Transport & TLS, and shows you, in priority order, exactly what to fix and how. Every check queries only the domain you enter, runs live against public DNS and the mail hosts that domain itself names, and is explained with the record we saw and the standard it's measured against. The result is a link you can send to a colleague or drop in a ticket, it re-runs and re-renders for whoever opens it, so it's never a stale screenshot.
Frequently asked questions
What does the grade mean?
It's a weighted roll-up: Mail Deliverability (40%), DNS Health (25%), Reputation (20%) and Transport & TLS (15%). Each check passes, warns or fails; informational checks are shown but don't affect the grade. Open any row to see the raw record and how it was scored.
Is anything uploaded or stored?
No. Checks run live against public DNS and the mail servers the domain itself lists, and results are held only in your browser. The shareable link simply re-runs the same public checks for whoever opens it, there's no database and no tracking.
Do you actually send email or probe third parties?
No. We read published DNS records and certificate/reputation data for the one domain you enter and its own mail hosts. We never send mail, never test open-relay by relaying, and never probe a host you didn't name.
How is this different from mxtoolbox?
Same public data, but one graded verdict instead of twenty separate lookups: dark, fast, ad-free, private, with every finding explained and a shareable link that stays live. Need continuous monitoring and alerting on drift over time? That lives in the CxO app.