SPF and DMARC Record Explainer

Paste an SPF or DMARC TXT record and this explains it term by term, counts the lookup-causing terms in it, and flags the settings that quietly leave a domain spoofable.

Nothing leaves your browser

This tool runs entirely in the page you are looking at. What you enter is never sent to us or to anyone else, is not stored, and disappears when you close the tab. It also never fetches anything on your behalf. It works only on what you give it.