We have show_additional_headers 1.0 installed and activated, but due to some reason it does for instance not show the headers "Content-Type" and "Content-Transfer-Encoding". It shows "User-Agent", "Mailer", "X-Newsreader" and the like, though.
Is this deliberate? The string "content" does not even exist in show_additional_headers.php, so I can't find any exclusions.
There is a version 1.1 available at http://trac.roundcube.net/browser/trunk/plugins/show_additional_headers?rev=..., can this be safely used with RC 0.7.2? And does it behave differently in this respect?