WPNotif allows you to send SMS or WhatsApp notifications to your customers from your WordPress website.
The plugin is also fully compatible with WooCommerce and you can set up an automatic notification trigger for your customers when creating a new order or when the status of this order is changed. Site administrators, including store owners, editors, etc. You can also manually set up WhatsApp messages or notifications.
Demo: https://codecanyon.net/search/24045791
You can also configure different ports for different countries, which can help you reduce your SMS costs and increase the efficiency of sending at the same time. You have the option to choose the cheapest gateway or use a combination of them.