Enter your domain to instantly check whether your email is protected against spoofing and impersonation — SPF, DKIM, DMARC and more. No sign-up required.
Note on DKIM: DKIM keys live under a private “selector” that varies per provider, so a “Warning” only means we didn’t find one of the common selectors — it doesn’t always mean DKIM is missing. If you know your selector, enter it above. MTA-STS is checked at DNS level only; a full policy check requires a server-side lookup.