> To indicate them being copy to self, Pegasus sets a message property.
> This property tells Pegasus to pretend the "To: "in front of TO-field
> of header and display that in column "From" of the folderlist.On
> indexing the column Pegasus does a mix: to show your whole
> correspondence with that user, the index is created on FROM-field of
> normal mails and the TO-field of mails marked to be copy to self. Nice
> feature and I don't wanna miss it ... but in your case not helpful.
It's a lot more than that, the copy-to-self message is very different than a regular message since it is designed to be able to resend the message.
Take a look at the raw view of any copy to self message and then look at a normal message. There is no way that changing the properties of a regular message that will have it display like a copy-to-self message. I suppose that you could manually edit one of the CNM files to make it a copy-to-self but that would be a real pain in the rear, especially with HTML. Here's a sample copy-to-self message.
X-cs: R
X-CS-Version: 1.0
From: Thomas Stephenson <stephens@bayarea.net>
X-RS-ID: Stephens
X-RS-Flags: 0,0,1,1,0,0,0
X-RS-Sigset: 1
To: support@tstephenson.com
Subject: Test Message Flag set to 3
Reply-to: stephens@scruznet.com
MIME-Version: 1.0
Content-type: text/plain; charset=ISO-8859-1
Content-transfer-encoding: 8BIT
Date: Tue, 29 Nov 2011 16:05:29 -0800
Testing.