View difference between Paste ID: XNXrmiZ4 and bLN9XiF6

 var waitTime = 1; // In seconds
 var group = 0; // 0 for no group check, otherwise people in this group will not receive the message
 function sendMsg(userId, username) {
     function send() {
         $.post('//www.roblox.com/messages/send',{
             subject: "Your message subject here...",
             body: "Your message here!",
             recipientid: userId,
             cacheBuster: new Date().getTime()
         }).done(function(response) {
             if (response.success == true) {
                 console.log('Sent message to ' + username + ' (' + userId + ')');
             } else {
                 console.log('Error sending to ' + username + ': ' + response.shortMessage);
             }
         });
     }
     if (group > 0) {
         $.get('//www.roblox.com/Game/LuaWebService/HandleSocialRequest.ashx?method=IsInGroup&playerid=' + userId + '&groupid=' + group, function(response) {
             if(response.indexOf('true') == -1) {
                 send();
             } else {
                 console.log('Didn\'t send a message to ' + username + ' because he is already in group ' + group + '.');
             }
         });
     } else {
         send();
     }
 }
 
 function run() {
     var timeout = 0;
     var elements = document.evaluate('//div[contains(@id,\'ctl00_cphRoblox_rbxGroupRoleSetMembersPane_GroupMembersUpdatePanel\')]//div[contains(@class,\'GroupMember\')]//span[contains(@class,\'Name\')]/a',document,null,XPathResult.UNORDERED_NODE_ITERATOR_TYPE,null);
     var currentNode = elements.iterateNext();
     while (currentNode) {
         (function(time,id,name) {
             setTimeout(sendMsg,time,id,name);
         })(timeout,currentNode.href.match(/\d+/)[0],currentNode.textContent);
         timeout+=waitTime*1000;
         currentNode = elements.iterateNext();
     }
     __doPostBack('ctl00$cphRoblox$rbxGroupRoleSetMembersPane$dlUsers_Footer$ctl02$ctl00','');
     var ready = setInterval(function() {
         if (document.getElementById('__EVENTTARGET').value == '') {
             clearInterval(ready);
             setTimeout(run,timeout);
         }
     }, 10);
 }
 var ready = setInterval(function() {
     if (document.readyState === 'complete') {
         clearInterval(ready);
         run();
     }
 }, 10);