ECAI is an innovative application designed to enhance the capabilities of your official LINE account, offering features that go beyond standard functionalities. It helps businesses increase sales and customer retention by utilizing purchase data, surveys, and diagnostic tools to understand customers' preferences and purchasing history. With this valuable insight, ECAI enables the delivery of personalized messages tailored to each customer, thereby boosting engagement and sales performance. The app seamlessly integrates LINE information with Shopify customer data using email addresses as a trigger, allowing businesses to send "cart abandonment messages" via LINE to customers who have opted in. Additionally, ECAI supports advanced marketing strategies through step-by-step message distribution based on purchase data and dynamic rich menu switching. The app further aids team collaboration with tagging, flagging, assigning team members, and memo functionalities and enhances CRM efficiency with pre-written templates and scheduled individual messaging capabilities.