Personalization: Use the recipient's name and tailor content to their preferences. Segmentation: Divide your email list into smaller groups based on demographics, behavior, or purchase history. A/B Testing: Test different subject lines, content, and call-to-actions to see what works best. Mobile Optimization: Ensure your emails are responsive and look good on all devices. Clear Call-to-Action: Make it easy for recipients to know what you want them to do next.