FREE TOOL · EMAIL DELIVERABILITY

SPF, DKIM & DMARC checker with the evidence.

Check live DNS records, see exactly what was found, and fix the gaps before your next campaign. No signup, no blacklist guesses, and no “deliverability score” pretending to know your inbox.

30 free checks per IP per day · no signup · live DNS evidence

STEP 1

Enter your domain

Use the domain that sends email, for example example.com. Do not include https://, a path or an email address.

STEP 2

Check the records

The tool queries live DNS for SPF, DMARC, MX and common DKIM selectors. If you know your DKIM selector, add it.

STEP 3

Read the evidence

Each check shows pass, warning or failure, the record it found and the reason. Missing records are reported as missing, not guessed.

STEP 4

Fix and re-check

Send the recommendations to your DNS or email provider, then run the check again after DNS propagates.

WHY IT MATTERS

Authentication is the part you can check before you send.

SPF says which servers may send for your domain. DKIM signs the message so receivers can detect changes. DMARC tells receivers what to do when authentication fails and where to send reports. A missing or broken record can land legitimate mail in spam — or let someone spoof your domain.

This checker reads the public DNS records and shows the evidence. It does not guess inbox placement, and it does not claim a blacklist result it did not check.

Questions about the checker

Is this SPF, DKIM and DMARC checker free?+

Yes. The check is free with no signup. It is limited to 30 checks per IP per day so one visitor cannot exhaust the shared DNS and server capacity.

Does this tool test actual inbox placement?+

No. It checks published DNS records and configuration. Inbox placement also depends on content, reputation, recipient behaviour, blocklists and provider filtering, which DNS alone cannot prove.

Why does it not find my DKIM record?+

DKIM lives at a provider-specific selector, such as google._domainkey or selector1._domainkey. The tool checks common selectors; enter your provider’s selector in the optional field if you know it.

What does the score mean?+

It is a transparent configuration checklist score based only on the DNS checks shown. It is not a deliverability guarantee or a spam-score prediction.

What does DMARC p=none mean?+

p=none collects reports but tells receivers not to block failing mail. It is useful for monitoring, but it does not stop spoofing. Move to quarantine or reject after reviewing reports.

Can I check a subdomain?+

Yes. Enter the exact From domain, such as mail.example.com. A root-domain record does not automatically prove every subdomain; check the domain that actually appears after the @ in your From address.

Is the result a guarantee that my email will not go to spam?+

No. Authentication is one part of deliverability. Reputation, content, links, list quality, sending volume and recipient engagement also matter. The report says what it checked and what it did not.