Improving user engagement involves several strategies: 1. Personalization: Use the recipient's name and tailor the content to their interests. 2. Segmentation: Segment your email list based on user behavior, demographics, or past interactions to send more relevant content. 3. Compelling Subject Lines: Write subject lines that are engaging and encourage the recipient to open the email. 4. Clear Call-to-Actions: Ensure that your emails have clear and compelling call-to-actions. 5. Responsive Design: Make sure your emails are mobile-friendly as a significant portion of users access emails on their mobile devices.