WP SMS plugin is integrated with SMSBox Gateway, and by using them, you can send SMS to anyone in Belgium.
For more information, check out this page. Then, go to the gateway field on WP SMS Settings to check out WP SMS Panel and gateway configuration options.
You need API Token and Sender Number to configure the gateway.
Follow the below steps and fill out the fields:
- Go to WP SMS Plugin » Settings » Gateway
- Fill out API Token and Sender Number
- Then, Save Changes to see Gateway Status is activated!