Quick summary
- Term
- DKIM
- Plain-English definition
- DKIM is an email authentication method that adds a cryptographic signature to outgoing messages.
- Technical definition
- DKIM is an email authentication method that adds a cryptographic signature to outgoing messages.
- Commonly confused with
- Related domain, DNS, registrar, API, or agent-infrastructure terms.
- Related terms
- SPF, DMARC, TXT Record
Definition
DKIM is an email authentication method that adds a cryptographic signature to outgoing messages.
Why it matters
DKIM helps receiving mail systems verify that email was authorized by the sending domain.