title: Swiftmailer Spam Test
body: <p>I've decided on what I'm going to use (<a href="http://spamcheck.postmarkapp.com/doc" rel="nofollow">Postmarkapp</a>) to check the spam value of my e-mails before sending them out. However, to get a true answer from Postmarkapp, I need to send the full e-mail with headers. I am using swiftmailer. </p>
  
  <p>How can I get the full header message using swiftmailer BEFORE it actually gets sent?</p>