DSP (Demand-Side Platform)

A DSP (Demand-Side Platform) is an advertising technology platform used by advertisers and agencies to buy ad inventory across multiple publishers and ad networks through a single interface. DSPs allow advertisers to set targeting parameters, bid strategies, creative assets, budget caps, and frequency limits — and then automatically bid on impression opportunities across connected SSPs. MailAdx includes an advertiser-facing DSP that lets newsletter advertisers discover publishers, create campaigns, set targeting (by topic, geo, device, and list size), upload creatives, and monitor delivery in real time. Unlike web DSPs that rely on cookies, MailAdx's DSP uses email hash-based targeting that works without third-party cookies.