Email list building is the practice of growing a database of potential customers who have opted to receive marketing communications. A quality email list is crucial for successful campaigns, as it comprises people who are genuinely interested in the brand or product. Strategies for list building include offering valuable incentives such as discounts, downloadable content, or exclusive insights in exchange for a subscription. Maintaining a clean and engaged email list helps marketers achieve better open and conversion rates by ensuring messages reach an interested audience. An organic, well-curated list forms the foundation for effective and respectful email marketing.