Free check

Check the email security of your domain

See whether your domain is protected against fake email and CEO fraud. We check DMARC, SPF, DKIM and more, and tell you what to fix.

Using your own DKIM selector?
We try the most common selectors ourselves. Enter yours if it has a different name.

Free and without obligation. The result is shown right away.

DMARC What should happen to fake email

SPF Who is allowed to send

DKIM Digital signature on your email

MTA-STS and TLS-RPT Encrypted delivery to you

BIMI Your logo in the inbox

What do we check?

Three DNS records that stop fake email

SPF

A list of the servers that are allowed to send email from your domain.

DKIM

A digital signature showing that the email comes from you and has not been changed on the way.

DMARC

Tells the recipient what to do with email that fails SPF and DKIM, and gives you reports on who sends in your name.

Why does this matter?

Fraudsters send email that appears to come from well-known companies, such as fake invoices or requests to change an account number. With the right setup, such email is stopped before it reaches the recipient. Gmail, Yahoo and Microsoft also require SPF, DKIM and DMARC from everyone who sends a lot of email.