Free tool

DMARC checker.
Is your domain protected?

Reads a domain's DMARC record, explains what it tells receivers to do with mail that fails, and shows what to change next.

No account required to use this tool.

New to DMARC? Read how DMARC records work. Add this checker to your site

Every domain's email records, in one place.

Lemon Domains keeps every domain in one list across registrars, so you know which ones send mail and need these records.