BIMI check

BIMI (Brand Indicators for Message Identification) publishes a DNS record pointing at your logo, which supporting mail clients (e.g. Gmail) display next to authenticated mail from your domain. Providers generally require the domain to already be at DMARC p=quarantine or p=reject before honoring a BIMI record — otherwise anyone could spoof mail claiming your logo. This check is purely informational for most domains that haven't opted into BIMI.