Free SPF, DKIM & DMARC checker

Enter a domain to instantly see its email authentication records — and whether they are set up to stop spammers spoofing your mail. No signup, no card.

We never store the domain you check.

Quick tip

SPF, DKIM and DMARC protect your sending reputation. To clean the list you send to, run a full verification — it catches invalid mailboxes, catch-all domains, role accounts, disposable addresses and typos.

What SPF, DKIM and DMARC do

Together these three DNS records tell the world which servers are allowed to send email as your domain, and what receivers should do when a message fails the check.

  • SPF lists the servers permitted to send mail for your domain.
  • DKIM adds a cryptographic signature so receivers can confirm a message really came from you and was not tampered with.
  • DMARC ties the two together and tells receivers what to do with mail that fails — monitor, send to spam, or reject outright.

Why it matters for deliverability

Mailbox providers increasingly require SPF, DKIM and a DMARC policy before they will reliably deliver your mail — and a missing or weak setup lets anyone spoof your domain, which lands your real messages in spam. Getting all three right is one of the cheapest, highest-impact things you can do for inbox placement.

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Questions people ask

Why can't you find my DKIM record?

DKIM is published per selector, and the selector is chosen by your email provider. We probe the common ones automatically, but if yours is custom, enter it in the optional selector box (you will find it in your provider's email-authentication settings) and check again.

Does a green result mean my email will always land in the inbox?

It is a big part of it, but not the whole story. Authentication proves your mail is genuinely from you; inbox placement also depends on your sending reputation and list quality. Sending to invalid or disposable addresses damages that reputation, which is where list verification comes in.

Can I check my whole list for deliverability too?

Yes. Sign up free and upload a CSV — your first 100 verifications every month are free, no card required.

Clean the list, not just the DNS

Safilist verifies deliverability, catch-all, role and disposable in one pass. 100 free every month.

Verify 100 emails free