DKIM vs SPF
DKIM (DomainKeys Identified Mail) and SPF (Sender Policy Framework) both come up in technology conversations and get confused. Here's the plain-English difference, side by side, so you can use each one with confidence.
The key difference: DKIM refers to domainkeys identified mail, while SPF refers to sender policy framework — they describe different things even when they show up in the same sentence.
DKIM — DomainKeys Identified Mail
An email authentication method that uses a cryptographic signature to prove an email was actually sent from the claimed domain and wasn't tampered with.
SPF — Sender Policy Framework
An email authentication standard that lets a domain owner specify which servers are allowed to send email on its behalf.
When to use DKIM
Reach for "DKIM" when the conversation is specifically about domainkeys identified mail. An email authentication method that uses a cryptographic signature to prove an email was actually sent from the claimed domain and wasn't tampered with.
When to use SPF
Reach for "SPF" when the conversation is specifically about sender policy framework. An email authentication standard that lets a domain owner specify which servers are allowed to send email on its behalf.
FAQs
What is the difference between DKIM and SPF?
DKIM stands for DomainKeys Identified Mail — An email authentication method that uses a cryptographic signature to prove an email was actually sent from the claimed domain and wasn't tampered with. SPF stands for Sender Policy Framework — An email authentication standard that lets a domain owner specify which servers are allowed to send email on its behalf.
Are DKIM and SPF the same thing?
No. They're often used in the same conversation because they're related, but they describe different concepts. DKIM = DomainKeys Identified Mail. SPF = Sender Policy Framework.
When should I use DKIM vs SPF?
Use DKIM when you're specifically referring to domainkeys identified mail. Use SPF when the topic is sender policy framework.