WooCommerce already comes with everything you need to bring your store online and sell all kinds of physical and digital products. With the WooCommerce Custom Notification Messages Plugin, you will have an easier time bringing your customers offers and promotions. It lets you create custom notification messages to promote sales events, coupons, and special offers.
This extension is pretty easy to use. It lets you easily customize your template and choose where your notification show up. It supports product, cart, shop, and checkout pages. You can use different templates and customize colors, icons, and styles from the back-end.
AA-Team is the developer behind this plugin. You can find out more about it here.