Catchy Subject Line: Grab their attention right from the inbox. Personalization: Use their name and tailor the content to their past behavior. Clear Call-to-Action (CTA): Make it easy for them to take the next step, whether it’s visiting your website, making a purchase, or updating their preferences. Incentives: Offer something valuable, such as a discount or free resource. Feedback Request: Encourage them to provide feedback on why they became inactive.