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Generate a ready-to-publish DKIM DNS record for your domain. Enter your selector and public key — or generate a new keypair — and get a complete TXT record to copy into your DNS settings.
Enter your domain name (e.g. example.com).
Set a DKIM selector — this is typically provided by your email provider (e.g. "google", "selector1", "default").
Choose RSA or Ed25519 key type. RSA 2048-bit is the most widely supported option.
Paste your existing public key, or toggle "Generate a new keypair" to create one in your browser.
Click "Generate DKIM Record", copy the TXT record, and add it to your domain's DNS as selector._domainkey.yourdomain.com.
DKIM (DomainKeys Identified Mail) is an email authentication method that lets the sender attach a digital signature to outgoing messages. The recipient looks up the sender's public key in a DNS TXT record to verify the signature. This proves the message was not altered in transit and that it came from an authorized sender.