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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

PlugRush is an online advertising platform that specializes in adult and mainstream traffic. Founded in 2007 and based in Norway, PlugRush is one of the veteran companies in this field, catering to both advertisers and publishers.

It allows advertisers to promote their products or services by displaying ads on websites within the PlugRush network, while publishers can monetize their websites by displaying ads from the platform. PlugRush provides various ad formats for adult content, including options specific to mobile traffic, targeting options, and tools to help advertisers and publishers optimize their campaigns and earnings.

The platform combines CPM, CPC, and CPA advertising campaigns for all countries. It also allows customization of ads to match the design of each website.

Update: PlugRush has ceased operations in March 2026

PlugRush for Publishers

PlugRush is an online advertising platform that offers publishers the opportunity to monetize their websites by displaying ads to their visitors. Whether you run a niche blog, an adult website, or any other type of online content platform, PlugRush provides a way for you to turn your traffic into revenue.

Sign Up and Account Setup 

The first step to becoming a PlugRush publisher is to sign up for an account on their website. The registration process typically involves providing basic information about your website and contact details. Once your account is approved, you can access the publisher dashboard.

Adding Your Website

After logging in, you'll need to add your website to the platform. This involves providing essential information about your site, such as its URL, niche, and traffic details. PlugRush uses this information to match your website with suitable advertisers.

Popunder Ad Networks are advertising platforms that specialize in delivering popunder ads to website visitors. Popunder ads are a type of online advertisement that appears in a new browser window behind the current active window when a user clicks anywhere on the website. They are less intrusive than traditional pop-up ads, as they don't interrupt the user's browsing experience but are still visible when the user closes or minimizes their current window.

One of the advantages of popunder advertising companies is that ad campaigns are usually on the CPM pay model, meaning publishers earn money from every ad that is shown to website visitors.

The CPM (Cost Per Mille or Cost Per Thousand) rates on popunder ad networks can vary widely based on several factors, including the network itself, the quality of traffic, the geographic location of the traffic, the niche or industry of the website, and the specific campaign parameters set by advertisers. Additionally, CPM rates can change over time due to market demand and supply dynamics.

For websites with mainstream (non-adult) content and traffic, CPM rates can range from $1 to $5 or more per thousand impressions (CPM). High-quality, well-targeted traffic from regions with strong purchasing power tends to command higher CPM rates.

For websites featuring adult content and traffic, CPM rates can vary widely. They might range from $1 to $10 or more per thousand impressions. The rates can depend on the quality of the traffic, niche specificity, and advertiser demand.

Here are the best PopUnder Ad Networks that offer the highest CPM payout rates for publishers.

PopCash is a highly specialized popunder advertising network founded in 2012. Popcash works with both publishers and advertisers from all over the world. Publishers can easily leverage this ad network to serve popunders to their users and earn high ad revenue for both web and mobile monetization.

PopCash for Publishers

In order to start monetizing websites with Popcash, publishers just need to sign up and create an account. All you need to do is register, submit your website and place our popunder code on the desired pages: Sign up for a Publisher Account on PopCash

Once your domain has been approved, all of your visitors will be shown a popunder advertisement every 24 hours. Popunder ads means the ads which automatically opens in another tab or window is called popunder advertising, in this case main window of your website will remain as it is so will not affect your page. The earning potential of Popunders are higher than other ad formats.

PopAds is an Advertising Network specialized in Popunders and one of the best paying Adsense alternative on the Internet. Connecting website owners, advertisers and traffic since 2010, PopAds is a leading popunder network in the world, offering both mainstream traffic and dating campaigns and use the CPM (Cost Per impressions) and CPV (Cost-per-view) cost models.

How to Create a PopAds Account

The registration process for PopAds is incredibly quick and easy. It only takes a couple of minutes to get signed up for an account. There is not specific requirement to get approval from PopAds. They will also accept all types of sites including adult sites, non-adult content sites, sub domain sites etc. 

You have to just sign up into their network and start earning money from your site: Click Here to Sign up for a PopAds Account

PopAds for Publishers

PopAds offers the industry’s highest CPM rates and the best international coverage to its publishers. As a publisher, you can join PopAds even if your website is new. You’ll have complete control over the ads that will be displayed on your site.