If Outlook user attached category (Red, Blue, etc) while sending mail to Thunderbird user then sent category should be displayed to Thunderbird user and Vice-verse, It should be globally.
So how to configure that , what Tag should be look at Outlook mail header ?
I can see following content in outlook email header :
Subject: Test Mail Date: Tue, 3 Sep 2013 20:11:52 +0530 Keywords: Red Category Message-ID: <002101cea8b3$be4a5d40$3adf17c0$@com> MIME-Version: 1.0
But when I send mail to other email client then it's not showing any Keywords.