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The Deliverability Checker.
Grade your sending domain in seconds. Live DNS checks on SPF, DKIM, DMARC and MX, with plain-English fixes.
Runs in your browser · public DNS records only · nothing is stored.
Book a call Grade your sending domain in seconds. Live DNS checks on SPF, DKIM, DMARC and MX, with plain-English fixes.
Runs in your browser · public DNS records only · nothing is stored.
Checking DNS records for …
Domain grade
Get the full breakdown (every record, what it means and the fix order) in your inbox.
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Authentication, DMARC policy, warm-up and reputation repair, handled end to end by people who do it every week. It’s part of how we run Managed Email & SMS.
Book a call★★★★★ 100% satisfaction rate ·40+ brands ·£10M+ tracked
What this checks. Public DNS records only: SPF, DMARC policy, MX and a probe of common DKIM selectors. It can’t see your sender reputation, engagement or inbox placement. A clean grade here means the foundations are right, not that every send lands. Queries run from your browser via Google and Cloudflare public DNS; your domain is never sent to us.
Book a call and we’ll find the single biggest leak in your retention channel. And if we work together, the risk sits with us: one fee, not a retainer, managed until you see an uplift in email revenue.
★★★★★ 100% satisfaction rate ·40+ brands helped·£10M+ revenue generated
“They'd found us more revenue before we'd even signed anything. The call alone was worth it.”Callum, CGS Direct
Retention teardowns, flow breakdowns and inbox tactics, every week. Free.
No spam. Unsubscribe any time.