Email marketers can use ROC curve data to: - Optimize Targeting: By understanding which segments of your audience are most likely to engage, you can tailor your campaigns to target these segments more effectively. - Improve Segmentation: Fine-tune your segmentation strategies based on the insights gained from the ROC curve to improve open and click-through rates. - Validate Models: Regularly evaluate the performance of your predictive models to ensure they remain accurate and reliable over time.