1. A/B Testing: Regularly test different email elements such as subject lines, images, and call-to-action buttons to see what works best. 2. Content Calendar: Maintain a content calendar to ensure a mix of promotional, informational, and engaging content. 3. Personalization: Use data to personalize your emails for different segments of your audience. 4. Interactive Elements: Incorporate interactive elements like polls, quizzes, or sliders to make your emails more engaging.