{"success":true,"data":{"id":"subscription-marketing-convergence","label":"List-Unsubscribe + known marketing platform (bulk ESP confirmed)","description":"Email has BOTH a List-Unsubscribe header (confirming it is a mailing list email) AND a known marketing-platform fingerprint in the headers (Mailchimp, Klaviyo, SendGrid, HubSpot, etc.). When both signals are present simultaneously, the email is confirmed bulk marketing from a commercial ESP — the combination is nearly impossible to fake and almost never appears on transactional or personal mail. Score: +2 trash (cross-module bonus on top of the individual signals).","tier":"warning","category":"marketing","isThin":false}}