Google App Script to Scan Gmail for payment emails from Adwords

gmail.gs

var SPREADSHEET_URL = "url";
function main() { 
  var name = ("Google Adwords/Recieved Payment");
  var label = GmailApp.getUserLabelByName(name);
  var unreadCount = label.getUnreadCount();
  var threads = label.getThreads(0,10);
  for (var n = 0; n < threads.length; n++) {
    var inbox = threads[n].isInInbox();
    var message = threads[n].getMessages();
    var lastDate = new Date(threads[n].getLastMessageDate());
    if(inbox == true) { 
      for (var i = 0; i < message.length; i++) {
        var date = message[i].getDate();
        var from = message[i].getFrom();
        var d = (date >= lastDate);
        if(d == true && from == ('Google Billing <billing-noreply@google.com>')) {
          var dollars = new RegExp("(\[0-9]+\,\[0-9]+\.\[0-9]+)|(\[0-9]+\.\[0-9]+)").exec(message[i].getPlainBody())[0]; 
          var clientId = new RegExp("(\[0-9]+\-\[0-9]+\-[0-9]+)").exec(message[i].getPlainBody())[0]; 
          var date = new RegExp("(\[A-z]{3}\\s\[0-9]+\,\\s\[0-9]+)").exec(message[i].getPlainBody())[0]; 
          var values = []; 
          values.push(clientId, dollars, date);
          var sheet = SpreadsheetApp.openByUrl(SPREADSHEET_URL).getSheetByName('Emails');
          sheet.appendRow(values); 
          message[i].markRead();
        } 
      }
      threads[n].markRead(); 
      threads[n].moveToArchive();
    }
  }
}

function clearEmails() {
  var sheet = SpreadsheetApp.openByUrl(SPREADSHEET_URL).getSheetByName('Emails');
  var range = sheet.getRange('A2:C');
  range.clear();
}

Added an iterator to loop through values.

Took the code from 43 lines down to 37 and made it much more efficient. Now the scrip just gets the most recent unread message in a thread and writes it to a spreadsheet. It won't write double values and order doesn't matter.