Automatically delete fake phishing emails from IT

filter_emails.script

function filter_emails() {

  /// 1day is the smallest increment
  var threads = GmailApp.search("newer_than:1d in:inbox");
  
   for (var i = 0; i < threads.length; i++) {
      // get all messages in a given thread
      var messages = threads[i].getMessages();
      for (var j = 0; j < messages.length; j++) {

          var body = messages[j].getRawContent();

          // Possible headers to filter
          // X-PHISH: This is a security awareness phishing simulation test from InfoSec Institute that has been authorized by the recipient organization
          // X-Report-Abuse-To: abuse-siq@infosecinstitute.com

          if (body.indexOf("X-PHISH-CRID") > -1) {
            message[j].markRead();
            message[j].moveToTrash();
          }
      }
   }
}

/*
 * Go to script.google.com
 * Add new project
 * Add the above code
 * Click save icon
 * Go to Triggers
 * Add new trigger
 * Everything is gravy
 * /