Popunder traffic is a long-standing advertising format where a landing page opens in a new browser window or tab behind the active one. It is generally considered high-volume and widely used for direct response campaigns because it can generate large numbers of impressions quickly. While it is less subtle than native formats, it often performs well for offers that do not rely heavily on immediate interaction. The main challenge is user perception, since the experience can feel interruptive if not handled carefully. However, with proper frequency caps and relevant targeting, popunder traffic can still be efficient. Networks such as DAO Ad aggregate this type of inventory across publishers, giving advertisers flexibility in scaling campaigns while testing different GEOs and landing page approaches.
