Articles European Popunder Advertising – Mass Advertising in Europe Both popups and popunders are types of advertising. Popups are small windows displayed on the top of the webpage where as popunders are displayed beneath the web page. Popups are … Share this: Share on LinkedIn (Opens in new window) LinkedIn Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on WhatsApp (Opens in new window) WhatsApp