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Find your DKIM record and check the strength of its key. Leave the selector blank and we try the common ones for you.
No selector? We test common ones like google, selector1 and default at the same time.
We decode the public key and report its real length. 2048 bits is the safe choice today.
Weak keys, test mode and revoked keys are called out so you can fix them.
Straight answers about your results.
DKIM adds a digital signature to the email you send. Receiving servers use the public key in your DNS to confirm the message wasn’t changed and really came from you.
A selector is the name that points to one DKIM key, like google or selector1. It lets one domain use a different key for each service that sends its mail.
Use 2048 bits. 1024-bit keys still work, but they’re weak by today’s standards.
Yes. It’s free and there’s nothing to sign up for.
Still unsure? Ask a WordPress expert
Quick checks you can run any time. No signup.
Your DKIM keys live in DNS, and we manage DNS for every site we host.