I recently tried launching a popunder campaign and realized that without the right little details and optimization, you can easily burn through your budget without achieving results. At first, I just ran ads and a landing page, but I was getting poor conversions: the landing page loaded slowly, the creatives weren't engaging, and the geos weren't ideal. Then I started looking for advice and came across this article—it explains why it's important to separate traffic by device, test landing pages, filter out bad sources, and more. If you want to try getting a little more out of popunder traffic, it worth to
use now and implementing a couple of the tips I've tested myself.