title: Australia Post Tracking Number In Hotmail / Gmail
body: <p>In Hotmail / Gmail DHL and FedEx tracking numbers seem to be picked up from emails and put into a nice header on top of the email.</p>
  
  <p>Is there documentation on how to format emails to make tracking numbers show in hotmail / gmail on the top?</p>
  
  <p>Also, is this possible for other carriers like Australia Post?</p>