1. Personalization: Use data and analytics to personalize your emails. Personalized emails have a higher open and click-through rate. 2. Interactive Elements: Incorporate interactive elements like polls, surveys, and GIFs to keep your audience engaged. 3. Clear CTAs: Include clear and compelling Call-to-Actions (CTAs) to guide your recipients on what to do next. 4. Feedback Loop: Implement a feedback loop to listen to your subscribers and make necessary adjustments based on their input.