BookBub Ads appear in dedicated spaces at the bottom of BookBub’s emails and on BookBub.com. A real-time auction determines which ads are served at any given time. When you create a campaign, you decide which readers you want to target and how much you’re willing to pay for an impression (one opened email or web page = one impression) or for a click from those audiences. When a reader opens an email from BookBub or visits a page on our website, we serve the ad of the highest bidder targeting that particular reader at that moment.
To learn more about our auction determines who sees your ad, you can watch this short video.