Free tool
DKIM Record Checker
Paste a DKIM record and we'll check it has the key tags (v, k, p) and a public key — so your signed mail authenticates correctly.
How it works
- 1Paste your DKIM TXT record value.
- 2We check for the required tags and a public key.
- 3Fix a malformed record before it breaks signing.
Questions
Frequently asked
What is DKIM?
DomainKeys Identified Mail adds a cryptographic signature to your email so receivers can confirm it wasn't altered and really came from your domain.
Where does the DKIM record live?
As a TXT record at selector._domainkey.yourdomain.com, published by your email provider.
Can I check a whole list at once?
This free tool checks one at a time. To verify a full list — email, phone and company together — upload a CSV to BounceBlock and preview your first 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.
100 free creditsNo credit cardCancel anytime