SMS Enable SMS Service Allow to send SMS service. SMS API Url Use this web address to send SMS requests, and in API requests, replace placeholders like {dst} with the recipient's phone number and {text} with the text message. API Method In the API Method, you can use "POST" to send data and "GET" to retrieve data. Activation SMS A text message sent to subscribers containing renewal information, including service type, expiration, and contact details,In the message, placeholders like {srv} (Service Profile), {exp} (expiration), {username}, {firstname}, and {lastname} should be replaced with specific subscriber information. SMS to be sent before expiration Send customized messages to users prior to their expiration date. SMS to be sent after expiration Send personalized messages to users after their expiration date.