To improve the efficiency of customer interaction, I use magento follow up email. This extension greatly simplifies the process of automatically sending emails to customers, especially when it comes to reminders, discount notifications and other trigger mailings. Thanks to this module, the percentage of customer returns has increased significantly, which has a positive effect on overall sales. Personally, I like the flexibility of customization — you can choose scenarios when and to whom to send emails, which greatly improves the customer experience.