title: IMAP- Parsing original headers from a bounced mail
body: <p>I am sending hundreds of emails with an unique id through email header. I have to track the bounced mails for the particular unique id.</p>
  
  <p>I can see the bounced emails with an attached EML file in my mailbox. Unfortunately the unique ID which I am looking for is placed in the attached EML file's header instead of bounced email's header. </p>
  
  <p>I am using PHP's IMAP function to read the headers and body sections. But unable to read EML attachment. </p>
  
  <p>Could any one explain how to read or parse the EML attachment using IMAP function.   </p>
  
  <p>Thanks.</p>