Segmentation allows you to create targeted email campaigns that are more likely to resonate with specific groups within your audience. Here are some ways to segment your list: 1. Purchase History: Segment customers based on their buying behavior to send targeted product recommendations or special offers. 2. Engagement Levels: Identify highly engaged customers and send them exclusive offers or early access to new products. 3. Demographics: Use information like age, gender, and location to tailor your messaging. 4. Lifecycle Stages: Create segments for new customers, repeat buyers, and inactive customers to send relevant content based on their stage in the customer journey.