Structured marketing efforts that use targeted email messages to engage subscribers, pstomer loyalty. Each campaign typically includes a series of emails tailored to a spromote products or services, nurture leads, or build cuecific audience and goal, such as product launches, seasonal promotions, newsletters, or re-engagement messages. Key elements of effective email campaigns include compelling subject lines, personalized content, strong calls to action, and strategic timing. Success is often measured by metrics like open rates, click-through rates, and conversions, allowing marketers to refine their approach for maximum impact.