By Using plugin WooCommerce International SMS, admins and customers can get notification about their order via SMS by using SMS gateway. This plugin not only can send SMS on order updates. you can also send sms from wp admin to any number.
This WP Plugin for WooCommerce is very useful when you want to get notified via SMS after placing an order. Buyer and seller both can get SMS notification after an order is placed. SMS notification options can be customized in the admin panel with ease.