Google Appscript Sample Code Send SMS

//write this code in your .gs file
//Your authentication key

var authKey = "YourAuthKey";


//Multiple mobiles numbers separated by comma

var mobileNumber = "9999999";


//Sender ID,While using route4 sender id should be 6 characters long.

var senderId = "102234";


//Your message to send, Add URL encoding here.

var message = "Test message";


//Define route 

var route = "default";


var payload = {
        "authkey": authKey,
        'mobiles' : mobileNumber,
        'message' : message,
        'sender' : senderId,
        'route' : route
};

var options = {
    "method": "post",
    "payload": payload
};
    
var res = UrlFetchApp.fetch("https://control.msg91.com/api/sendhttp.php?", options);
    
var resAsTxt = '' + res + '';
    
Logger.log(resAsTxt)