Email Retargeting is a marketing strategy that re-engages users who have previously interacted with an email campaign but did not convert. It involves sending follow-up emails with personalized offers, reminders, or content to encourage action. Common retargeting strategies include abandoned cart emails, product recommendations, and special discount offers. Marketers use email tracking to determine engagement levels and segment audiences accordingly. Retargeting increases conversions by keeping a brand top-of-mind for potential customers. Platforms like Mailchimp, ActiveCampaign, and Klaviyo offer automated email retargeting features to optimize re-engagement efforts.