Free Tool, No Signup Required
DKIM Key Generator
Generate a DKIM key pair and DNS record right in your browser. The private key is created on your device and never sent to us.
How to set up DKIM
- Install the private key in your mail server or sending platform's DKIM settings.
- Publish the DNS record as a TXT record at the host shown (e.g.
mail._domainkey.yourdomain.com). - Some DNS providers require splitting a long record into 255-character quoted strings. Paste the full value; most modern panels handle this automatically.
- Confirm it with the DKIM checker, and set up SPF and DMARC too.
Clean your list too
Authentication plus a verified list is what reliably reaches the inbox.