title: Sensitive information in email headers?
body: <p>If the to: email is removed, is there any senstive information in an email header?</p>
  
  <p>The reason I ask is because I am starting a project (like many others) to document received spam. I plan to publish the headers (with my email and name removed).</p>
  
  <p>So I am wondering if there is anyway spammers (or anyone else) could possible retrieve private information based on the header content</p>
  
  <p>Thoughts?</p>