Where every outbound build starts
Two things stop
a cold email working.
It never arrives, or it arrives and isn't worth answering. Almost everybody guesses which one they've got, rewrites the message, and changes nothing — because the message was never the problem. This tells you which one the evidence actually points at.
Real lookups against your real domain. If your setup is clean, it says so and moves on — there is no version of this that invents a fault to earn a conversation.
It runs live
SPF, DKIM, DMARC, MX, the registry record and the public blocklists — queried against your domain the moment you press the button. No cached grades, no stored scores.
It shows its working
Every finding prints the record it came from, so you can check us against your own DNS rather than take a verdict on trust.
It says what it can't see
DKIM selectors can't be enumerated from outside, and some registries and blocklists refuse queries. Those come back as limitations, never quietly folded into a pass or a fail.
Now you knowwhich one it is.
The infrastructure half is solvable by construction — we make it a solved constant so the offer is the only variable left. If your evidence points the other way, that's the conversation worth having instead.