Methods and systems for authenticated supplemental content delivery are disclosed herein. The systems can include a first requestor and a second requestor. The system can include a plurality of networked servers. The plurality of networked servers can: receive a first supplemental content request including a digital certificate from the first requestor; determine the inclusion of the digital certificate in the first supplemental content request; validate the digital certificate; determine a supplemental content class from a set of supplemental content classes based on the digital certificate; select first supplemental content based on: the determined supplemental content class; and provide the selected first supplemental content in an electronic form to the first requestor.