The basket reminder module (Opencart Basket Reminder Module) is a module that sends a reminder to your customers when they leave the site without purchasing the products they have added to the basket. When customers leave the cart without completing the purchase process, you can send them a reminder message to their registered e–mail address or registered mobile number using this module.
You can also increase the purchase rates when you send an email with a discount coupon to these customers. Because you also know that no one easily adds a product they don't want to buy to their cart.