Why publishers re-evaluate formats before demand peaks

Monetag’s 2026 traffic spike calendar highlights more than 60 high-monetization events, from Black Friday to major sports finals, where publishers can capture extra revenue if their ad stack is ready. Two formats—popunder and push—compete for the same exit-intent and return-traffic budgets, but they behave differently under seasonal pressure. Popunders monetize the moment a user leaves, while push ads re-engage users later. The calendar signals when to test and scale each format so you’re not scrambling when CPMs rise.

Popunder ads: fast setup, immediate payouts on exit traffic

Popunder ads open a new tab behind the current one and monetize exit-intent traffic with minimal technical overhead. For blogs already running native ads, adding a popunder can capture revenue from users who would otherwise leave without clicking anything. Performance hinges on traffic quality: high-intent exits convert better than broad or accidental traffic. Because setup is lightweight—often a single line of JavaScript—publishers can A/B test popunders quickly before a spike and scale if CPMs justify the user-experience trade-off.

Push ads: higher long-term revenue, but requires upfront trust

Push ads ask users to opt in for browser notifications and then retarget them with offers over days or weeks. They require more upfront work—crafting opt-in flows, segmenting audiences, and managing frequency—but can deliver higher lifetime value per user than one-time popunders. Push campaigns often outperform popunders on repeat visitors and loyalty content, where sustained engagement matters more than a single exit payout. The format works best on sites with loyal audiences and clear segmentation strategies.

How to choose before the next seasonal spike

Use Monetag’s calendar to identify spikes tied to commerce or events—Black Friday, back-to-school, or major sports finals—where exit-intent traffic surges. If your site sees high exit rates on product pages, prioritize popunders to monetize those moments immediately. If your audience returns frequently for guides or updates, invest in push opt-ins and retargeting sequences to capture repeat value. A mixed strategy can work: run popunders during the spike itself and push retargeting in the days afterward to extend the revenue window.

Traffic quality and format fit matter more than CPM alone

Not all visits are equal. A popunder on a high-intent e-commerce exit can outperform a push retargeting campaign on low-quality traffic. Conversely, push ads on a niche newsletter audience can yield higher lifetime revenue than popunders on generic traffic. Before scaling either format, segment your traffic by intent, device, and geography. If your data shows strong return rates, push is likely the better long-term play. If exits dominate and bounce rates are high, popunders can capture value without redesigning the site.

Quick checklist for publishers this week

• Check Monetag’s 2026 calendar for the next spike within 30 days and note the expected traffic type (commerce, sports, seasonal).

• Run a 48-hour popunder A/B test on 10% of exit-intent traffic to measure immediate uplift and user drop-off.

• If your site has loyal repeat visitors, launch a push opt-in campaign on 5% of returning users and track opt-in rates and revenue per user over 7 days.

• Compare blended eCPM: popunder revenue per exit versus push revenue per returning user. Scale the winner before the spike hits.

• Document user-experience feedback and adjust frequency caps or opt-in flows to balance monetization with retention.

Bottom line: match format to traffic moment and audience

Popunders excel at monetizing exit-intent traffic with minimal setup, while push ads build long-term revenue through repeat engagement. Before a seasonal spike, decide which traffic moment you want to own—exits now or returns later—and align your format accordingly. Use Monetag’s calendar to time your tests, and let traffic quality—not just CPM—determine the winner.

If your site skews toward commerce or news with high exit rates, prioritize popunders for the spike itself. If your audience returns for updates or guides, invest in push opt-ins and retargeting to capture value beyond the spike. A mixed strategy can capture both immediate exits and delayed returns, smoothing revenue across the season.

Test, measure, and scale the format that aligns with your traffic quality and user experience goals before the next demand peak.

Sources: Monetag’s 2026 traffic spike calendar and Monetag’s comparison of popunder and push ad formats.

Additional context: Popunder performance depends heavily on traffic quality, and push ads require upfront opt-in work but can generate higher long-term revenue.

Useful planning signals: Monetag’s calendar highlights 60+ high-monetization events for publishers to plan around.

Publisher planning tip: Before a spike, run a quick A/B test on 10% of exit-intent traffic for popunders and a small push opt-in campaign on returning users to compare immediate and long-term revenue.

Traffic quality matters: Not all visits generate equal returns; poorly targeted traffic can reduce advertiser demand and user experience.

Format fit: Popunders work best for exit-intent monetization, while push ads suit loyal, returning audiences.

Seasonal spikes: Use the calendar to time tests and scale the winning format before demand peaks.

User experience balance: Adjust frequency caps and opt-in flows to maintain retention while maximizing revenue.

Mixed strategy: Combine popunders during the spike with push retargeting afterward to extend the revenue window.

Publisher takeaway: Choose the format that matches your traffic moment and audience behavior to capture maximum value before the next seasonal peak.