The Complete Guide to Popunder Ads

When it comes to digital advertising formats that deliver consistent reach and strong conversion rates, popunder ads are hard to beat. They've been a staple of performance marketing for years — and for good reason. In this guide, we'll cover exactly what popunder ads are, how they work, and how to get the most out of them on the Squren platform.

What Is a Popunder Ad?

A popunder ad is a type of online advertisement that opens in a new browser window or tab behind the user's current browser window. Unlike popups, which interrupt the user experience by appearing in front of content, popunders are non-intrusive — the user discovers them when they close or minimize their current window.

This subtle approach tends to lead to higher engagement because the ad is seen when the user is in a more relaxed, exploratory mindset rather than feeling interrupted.

How Popunders Work

  1. A user visits a publisher website that has popunder ad units enabled.
  2. When the user clicks anywhere on the page (or triggers another action), a new window or tab quietly opens in the background.
  3. The popunder loads your ad's landing page or creative.
  4. When the user finishes with the original site, they find your ad waiting for them.

Because the user "discovers" the ad rather than being forced to see it immediately, popunders often generate above-average engagement rates.

Why Advertisers Love Popunder Ads

High Reach

Strong Conversion Rates

Cost Efficiency

Wide Compatibility

Best Practices for Popunder Campaigns

1. Match Your Landing Page to Your Audience Since the full landing page is the ad, your page needs to be compelling and load fast. Slow-loading pages = lost conversions.

2. Use Strong, Clear CTAs The user didn't click to come to your page — they discovered it. A strong, obvious call to action helps guide them to the next step.

3. Target Carefully Use Squren's targeting features to make sure your popunders reach the right geographic regions, devices, and audience segments. A popunder for a US-only offer shouldn't be served globally.

4. Frequency Cap Your Campaigns Showing the same popunder to the same user multiple times in a short period can annoy visitors and hurt publisher relationships. Set frequency caps to keep things fresh.

5. Test Multiple Landing Pages Run A/B tests with different landing page variations to find out what resonates best with your audience. Squren's in-depth reporting makes it easy to compare performance.

6. Track with Tokens Use Squren's token tracking options to pass data back to your analytics platform. Understanding which publishers, devices, and geos convert best allows you to optimize your bids over time.

Setting Up a Popunder Campaign on Squren

Getting started with popunder ads on Squren is straightforward:

  1. Log into your Squren advertiser account
  2. Create a new campaign and select "Popunder" as your ad format
  3. Set your targeting parameters (geo, device, day-parting, etc.)
  4. Enter your landing page URL
  5. Set your bid and daily budget
  6. Launch and monitor performance in real time

If you need help optimizing your setup, Squren's 24/7 support team is always available to assist.

Popunders for Publishers

If you're a publisher, adding popunder inventory to your site is a great way to monetize traffic that isn't clicking on banner ads. Setup is simple — just a URL is needed for the fallback — and payouts are competitive because demand for popunder inventory is consistently high.

Get Started Today

Popunder ads are a proven, powerful format for advertisers who want scale, reach, and cost efficiency. Whether you're running affiliate offers, brand awareness campaigns, or anything in between, Squren's popunder inventory gives you access to real, quality traffic.

Sign up at Squren.com and launch your first popunder campaign today.