function testing1() {
  Logger.log(Session.getActiveUser().getEmail());
   var mail1 = GmailApp.getInboxThreads();
   for(var x=0;x<mail1.length;x++){
    var msg = mail1[x].getMessages();
     for(var i=0;i<msg.length;i++){
       var mesg = msg[i].getBody();
       var att = msg[i].getAttachments()[0];
       Logger.log(att);
     }
   }
}