Your verified mark sits in the inbox row before the message is opened. It requires DMARC enforcement first, which is rather the point: BIMI is what getting everything else right looks like.
The scan needs no account. Plans start at 12 €/mo with a 14-day trial.
BIMI is the only authentication result with a visual payoff, and the only one a customer will ever notice. It is also the last one you can turn on, because it will not display until the domain is enforcing.
A mark will not render until DMARC is at quarantine or reject. Nothing about BIMI can be shortcut, which is why it reads as a trust signal rather than a setting.
The spec wants SVG Tiny PS with a narrow set of allowed elements. We sanitise the file into that profile and host it, so a logo that renders everywhere else still renders here.
A Verified Mark Certificate is issued against your registered trademark by a certificate authority. We host it and tell you precisely what to buy; the trademark has to be yours.