SPF, DKIM & DMARC Checker
Find out why emails from a domain land in spam. We check MX, SPF, DKIM, DMARC and BIMI records and explain every problem in plain words.
DMARC record generator
_dmarcDNS records are looked up from your browser through public DNS-over-HTTPS (Google / Cloudflare). Nothing is stored.
How to use the SPF, DKIM & DMARC Checker
Enter a domain
Or an email address — we take the domain.
We read the DNS
MX, SPF, DKIM selectors, DMARC and BIMI.
Fix the issues
Clear verdicts and ready-to-copy records.
Why use our SPF, DKIM & DMARC Checker?
MX records
Mail servers and the provider (Google, Microsoft, Zoho…).
SPF check
Syntax, “all” policy and the 10-lookup limit.
DKIM
Tries 30+ common selectors automatically.
DMARC
Policy, reporting and alignment explained.
Deliverability score
One score with the most important fixes first.
Record generator
Copy a recommended DMARC record.
Frequently asked questions
Everything you need to know about the SPF, DKIM & DMARC Checker.
Back to the toolWhat are SPF, DKIM and DMARC?
Three DNS records that prove your emails are really from you. SPF lists allowed servers, DKIM signs each email, and DMARC tells receivers what to do when checks fail.
Why do my emails go to spam?
Missing or wrong SPF/DKIM/DMARC records are the most common reason. Gmail and Yahoo now require them for bulk senders.
What is a DKIM selector?
A name that points to your DKIM key, like google._domainkey. We try the most common selectors; you can also enter your own.
What DMARC policy should I use?
Start with p=none to collect reports, then move to p=quarantine and finally p=reject once all your email sources pass.
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