Rated 2 out of 5 stars

Idea behind the extension seems nice, but way to bugged to be useful (and potentially harmful):

- marks all of my own mail as fraudulent, since it does not add required headers to outgoing email (after proper setup)
- does not recognize all mail-servers in the Return Path for the "Return Path Reputation Score"
- Does not save "Do No Scan Folders List"
- Pressing "Junk Mail Controls" in the Options window brings up an empty dialog.
- Stumbles/Crashes/Hangs TB on messages with malformed / compromised Return-Path / Received headers
- Authors do not reply to bugreports, though they seem to fix some of the bugs reported