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PopUnder ads are one of the most effective ad formats for publishers looking to maximize their earnings. Unlike traditional display ads, PopUnders open in a new browser tab or window behind the user’s current screen, ensuring visibility without disrupting the browsing experience. This format works exceptionally well because it guarantees impressions, making it highly attractive to advertisers running CPM (cost per thousand impressions) campaigns.

For publishers, PopUnders can be an incredibly profitable monetization method. Since all campaigns in these networks operate on a CPM basis, you earn revenue simply by displaying the ads—no clicks required. The key to success with PopUnders is finding a network with competitive CPM rates, high-quality advertisers, and efficient targeting to ensure good user engagement.

If you’re looking for the best PopUnder ad networks with high CPMs, here are five top choices:

PopAds

PopAds is one of the most well-known PopUnder ad networks, offering some of the highest CPM rates in the industry. Unlike many competitors, PopAds gives publishers complete control over how PopUnder ads appear on their websites. Publishers can configure various settings, including ad frequency, filters, and minimum bid prices, allowing them to fine-tune their monetization strategy for the best balance between revenue and user experience. It is particularly strong in Tier 1 countries like the US, Canada and Europe, where advertisers are willing to pay premium rates for impressions. Another key feature is the advanced targeting and customization options, allowing website owners to block unwanted ad categories to maintain a good user experience.

One of PopAds’ biggest advantages is its fast and flexible payout system. The minimum withdrawal amount is just $5, making it accessible to small and large publishers alike, and an ideal choice for those who prefer frequent payouts. Payments are processed daily through PayPal, Payoneer, Bitcoin, Capitalist and wire transfers. 

In addition to PopUnders, PopAds also offers floating banners, which can be displayed alongside the PopUnders to increase overall earnings. With high CPMs, extensive customization options, and quick payouts, PopAds remains a top choice for publishers looking to maximize their revenue with PopUnder ads.

Link: Sign up in PopAds

Adsterra is a global ad network founded in 2013 by a team of affiliate marketers and webmasters with over 20 years of experience in the industry. Usually considered the best alternative to Adsense for publishers, this Advertising Network boasts over 18,000 direct publishers; 30+ billion impressions/month; 248 GEOs covered; and over 12,000 brands, affiliates, media agencies, and ad networks. 

Adsterra’s reach stretches across mainstream and non-mainstream verticals with millions of successful campaigns, and Advertisers may choose between an intuitive self-serve platform with automated onboarding and live-chat support or working with a personal manager. Known for innovative advertising displays such as banner ads, Video ads, Landing pages, popunders, In-page Push ads, Social Bar and more different ad formats, combining them with intelligent ways to monetize web and mobile traffic. 

The platform has no minimum traffic requirements and offers one of the highest CPM (cost per mille), CPC (Cost per click) and CPA (Cost per action) rates in the industry. This ad network is also a great place to start for new marketers and blog owners with very little traffic. Whether you want to use Adsterra as an Adsense alternative or if you’re going to use it in conjunction with another network, this is a great Ad network to consider for monetizing your traffic.

Adsterra for Publishers

Getting started on Adsterra as a Publisher is a simple process. All you have to do is to sign up on Adsterra; provide your name and email to create an account; and complete the registration process with the necessary information: Adsterra - Display Ad and Affiliate Network Service for Publishers

Once you have been approved as a publisher on the network, you can put in the codes and start monetizing your website. Then, follow the prompts on your Adsterra user dashboard to complete the process. Adsterra ads are compatible with all major CMS, including WordPress, Blogspot and just regular HTML-based websites.