SPF
Who may send email as you?
Stops strangers from sending as @yourdomain — only your real mail systems are allowed.

See if scammers can abuse your domain in email — free, no signup.
If any one is missing, your customers could trust a fake email. We show you which you have.
Who may send email as you?
Stops strangers from sending as @yourdomain — only your real mail systems are allowed.
Was the message altered?
Proves your emails weren't tampered with — so customers can trust messages from you.
What happens when checks fail?
Tells inboxes to block fake mail claiming to be from your business — your strongest line of defense.
We show whether scammers can abuse your domain in email — and what to fix to protect your customers.
Yes. No account required — we built this for business owners.
No. We only look at public domain settings. Your inbox stays private.