To find the best CPM bid on popads for a T3 geo, start by setting a low bid to test the waters. Begin with the platform’s suggested minimum or slightly above, and monitor how much traffic you're getting. Gradually increase your bid in small increments, watching for changes in impressions, click-through rates (CTR), and conversions.
The goal is to find the sweet spot where you get decent traffic volume without overpaying for low-quality impressions. Keep your targeting as precise as possible and use frequency caps to avoid hitting the same users repeatedly. Split test multiple ad creatives to identify what resonates best with your audience. Finally, analyze the data carefully, sometimes a slightly higher CPM can lead to better-quality traffic and higher conversion rates. Keep optimizing based on performance trends, and be ready to adjust bids depending on competition or changes in user behavior.