Unfortunately, Outlook lacks the ability to display all the message headers in a direct fashion. The companion to POPFile, Outclass allows you to classify messages within Outlook itself. (Outclass does not support other clients currently.)

If you only need to get to the the X-POPFile-Link occasionally, or you prefer POPFile to Outclass, you may yet be able to find the X-POPFile-link. In Outlook:

1. Open the message.
2. Go to View→ Options.
3. Scroll to the bottom of the Internet Headers.
4. Copy the X-POPFile-Link URL such as http://127.0.0.1:8080/jump_to_message?view=popfile12124=5.msg
5. Paste the URL into your favorite web browser.

See also:

• Access POPFile from within Outlook
• X-Popfile-link header