Free domain audit · 60+ signals · No signup

Is your email actually reaching the inbox?

A complete deliverability and DNS audit in under five seconds. SPF, DKIM, DMARC, MTA-STS, BIMI, sixteen blacklists, TLS certificates and security headers — every signal that decides whether your mail lands or bounces.

No signup needed Results in 3-5 seconds 60+ signals across 4 categories UK-hosted, GDPR-safe
60+
Signals per audit
16
Blacklists scanned
~4s
Typical scan time
25+
DKIM selectors probed
A–F
Plain-English grade
What we check

Four categories. Sixty-two signals.

Mail deliverability isn't one setting — it's a stack. We audit every layer, surface what's broken, and tell you exactly how to fix it.

Email Deliverability

MX, SPF, DKIM, DMARC, BIMI, MTA-STS, TLS-RPT, reverse DNS, SMTP banners, open-relay tests, plus reputation scoring across Spamhaus, Barracuda, SORBS, SpamCop and twelve more lists.

DNS Health

Nameserver diversity and serial matching, DNSSEC chain of trust, CAA authorisation, SOA sanity, CNAME chains, TTL hygiene, wildcard detection, glue records and TXT inventory.

Web & TLS

Certificate chain validity, SAN coverage, key size and signature algorithm, supported TLS versions, HTTP→HTTPS redirects, HSTS, HTTP/2 and HTTP/3 reachability, plus six security headers.

Registration

WHOIS data parsed and presented in plain English. Registrar, lifecycle dates, expiry warnings, transfer lock status, privacy settings and a delegation-match check to catch hijack risk.

How it works

Type a domain. Get a real answer.

No accounts, no upsell wall, no marketing email two minutes later. Just a thorough, honest audit you can act on or hand to your developer.

01
Enter the domain

Type any domain name. We resolve the apex and pull every record we need from authoritative servers — not cached aggregators.

02
60+ checks run in parallel

All categories scan simultaneously: DNS lookups, blacklist queries, TLS handshakes, HTTP header inspection and WHOIS resolution.

03
Plain-English results

Pass, warn, or fail on every check. Each problem comes with a "How to fix" guide written for humans, not just sysadmins.

04
Optional PDF report

Drop your email for a branded PDF report you can forward, file, or hand to whoever maintains your DNS. No spam, one email, that's it.

Why this matters

Bad deliverability costs you customers you never knew existed.

Around one in six legitimate marketing emails never reaches the inbox. For transactional mail — receipts, password resets, quotes — even a small failure rate causes invisible damage. The fix is almost always a misconfigured DNS record. Find it. Fix it. Move on.

Spam folder = invisible

95% of users never check spam. If your DMARC isn't aligned or your SPF is too loose, Gmail and Outlook will quietly filter you out without bouncing the mail.

Spoofing risk is real

Without DMARC at reject, anyone can send mail "from" your domain. Phishing campaigns impersonating your business damage trust before you even know they exist.

Hidden until it isn't

Email problems usually surface as "we're not getting replies" or "did you get my quote?" — soft signals from prospects who quietly moved on. By then the damage is done.

Fixable in an afternoon

90% of the issues this tool surfaces are simple DNS record changes. Once you know what to add, your registrar's control panel is the only place you need to go.

Ready when you are

Run your free audit. See where you stand in five seconds.

No signup, no payment details, no marketing follow-up unless you ask for the PDF. Just a thorough audit and a clear set of next steps.

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