Why publishers are rethinking ad-format strategy before seasonal spikes

Publishers are preparing for seasonal traffic surges that can swing revenue by 20–40% in a single week. The Monetag Traffic Spike Calendar 2026 highlights more than 60 high-monetization events, from back-to-school sales to Black Friday and holiday shopping windows. With demand concentrated in short bursts, publishers need ad formats that deliver revenue quickly without harming user experience. Popunder and push ads are two of the most scalable options, but they serve different goals and require different preparation strategies.

Popunder ads: fast revenue with minimal setup

Popunder ads open in a new browser tab behind the main window, delivering full-page visibility without interrupting the user’s current session. This makes them ideal for campaigns that need immediate reach and volume. According to Monetag’s internal testing, popunders can be deployed with minimal technical setup and begin generating revenue within hours. However, their intrusive delivery can hurt engagement metrics if frequency caps are not enforced. The Yep Ads guide recommends setting a minimum cap of one impression per user per 24 hours, with some media buyers opting for stricter caps like one per 12 hours to balance monetization and user experience.

Popunders are less suitable for time-sensitive promotions because the ad does not demand instant attention. ROIAds notes that urgent offers perform better on formats that interrupt the user flow, such as push notifications or interstitials. For publishers running evergreen offers or broad-reach campaigns, popunders provide a low-friction way to monetize traffic spikes without requiring opt-ins or complex integrations.

Push ads: higher eCPMs and better user relationships

Push ads require users to opt in before receiving notifications, which means they reach a more engaged audience. This opt-in model leads to higher click-through rates and better long-term revenue potential, according to Monetag’s comparison. Push ads are interruptive by design, but the user chooses to engage, which can improve ad performance and reduce negative sentiment. Remoby highlights that push ads allow publishers to build ongoing relationships with users, making them a stronger fit for campaigns that rely on repeat engagement or loyalty-building offers.

For publishers with established opt-in bases, push ads can deliver higher eCPMs and stronger brand control. However, they require more upfront work to design compelling notifications and segment audiences effectively. The trade-off is a format that scales more slowly but sustains higher revenue per impression over time.

How to test and combine formats before demand peaks

Publishers should run A/B tests on both formats at least two weeks before major traffic spikes to gather performance data. Start with a small percentage of traffic—5–10%—to measure impact on bounce rates and session duration. If popunder tests show engagement drops, dial back frequency or restrict placement to specific pages rather than site-wide. For push ads, focus on optimizing opt-in messaging and segmentation to improve CTR and eCPMs.

Combining formats can maximize revenue during peak periods. RichAds recommends using push ads to validate offers and gather early CTR/CPA signals, then layering popunders to scale volume. This hybrid approach works well for verticals like gambling, where push ads identify high-performing angles and popunders expand reach to lower-intent users. Publishers should monitor performance daily and adjust caps or placements based on real-time data to avoid burning through budget or alienating users.

Key takeaways for publishers

Popunder ads are the fastest way to monetize traffic spikes with minimal setup, but they require strict frequency caps and careful placement to protect engagement. Push ads offer higher long-term revenue and better user relationships but demand more upfront work to design and segment campaigns. The best strategy is to test both formats now, using the Monetag Traffic Spike Calendar as a guide to prioritize preparation for the biggest monetization windows of 2026.

Regardless of format choice, publishers should avoid treating popunders or push ads as standalone revenue streams. Use them alongside display, video, or direct-response formats to diversify monetization and reduce dependency on any single source during volatile traffic periods.

Quick checklist for publishers

  • Set popunder frequency caps to one impression per user per 24 hours (or stricter).
  • Test push ad opt-in messaging and audience segmentation before scaling.
  • Run A/B tests on both formats at least two weeks before peak events.
  • Monitor engagement metrics daily and adjust placements or caps as needed.
  • Combine formats to validate offers with push ads, then scale volume with popunders.

By preparing now, publishers can position themselves to capture maximum revenue during the most lucrative traffic windows of 2026.

For more details on seasonal planning, refer to the Monetag Traffic Spike Calendar 2026.

Additional reading: Popup vs Popunder: Key Differences and Uses in 2026, Pop Ads Explained: What They Are, How They Work, and When to Test Them, Popunder Traffic: The Complete Guide for 2026, How to Combine Ad Formats for Gambling Campaigns.

Image: Monetag’s Traffic Spike Calendar 2026 highlights 60+ high-monetization events for publishers.