Customized promotions can significantly improve the effectiveness of email marketing campaigns. Some key benefits include: - Higher Engagement Rates: Personalized emails are more likely to be opened and engaged with compared to generic emails. - Increased Conversion Rates: By offering relevant promotions, subscribers are more likely to make a purchase. - Enhanced Customer Loyalty: Personalized offers make customers feel valued, leading to increased loyalty. - Better ROI: With higher engagement and conversion rates, the return on investment (ROI) for customized promotions tends to be higher.