title: How can I attach outlook mail banners / tags
body: <p>Im looking for ways to add mail headers so the mail recipients will be able to identify that the message is a spam -  such as the banner that exists in the screenshot below. Do I need to use the X-Antispam message headers? 
  <a href="https://docs.microsoft.com/en-us/office365/SecurityCompliance/anti-spam-message-headers" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/office365/SecurityCompliance/anti-spam-message-headers</a></p>
  
  <p><a href="https://i.stack.imgur.com/UeOGo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UeOGo.png" alt="enter image description here"></a></p>