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Q & A Email Auth · August 5, 2026

Can I have multiple DKIM keys for the same domain?

Yes. You can publish as many DKIM keys as you need, each with a different selector prefix (e.g., google._domainkey, mailchimp._domainkey, s1._domainkey). This is common when using multiple email platforms — each gets its own key pair.

Read the full guide
What Is DKIM? How DomainKeys Identified Mail Works
DKIM attaches a cryptographic signature to every email you send. Receiving servers verify the signature against a public key in your DNS — proving the message is authentic and untampered. No DKIM means anyone can forge your brand's email.
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