I would like to add the word "EXTERNAL:" to the list of subject prefixes like "RE:" and "FW:" that are ignored when sorting by subject in Outlook 2007.
For example, this message is sorted as if the subject was simply "Some Subject".
From: email@example.com To: firstname.lastname@example.org Subject: RE: Some Subject
This reply is sorted as if the subject was "EXTERNAL: RE: Some Subject". (B.com's server is set up so that the word "EXTERNAL:" is added to the subject for emails that originate outside of b.com.)
From: email@example.com To: firstname.lastname@example.org Subject: RE: EXTERNAL: RE: Some Subject
As an Outlook end user, how would I make the second email sort as if its subject was "Some Subject"?