Email modules in OpenCart extend the standard capabilities of sending and managing emails and improve communication with customers. With their help, you can set up automatic notifications about orders, newsletters, promotions and special offers, and price reductions. Often, such modules include convenient email templates, editors, and integration with popular mailing services. Additional features may include tracking email openings and clicks, analyzing the effectiveness of email campaigns. Using email modules helps to strengthen the connection with customers, increase their engagement, and increase the number of repeat purchases.