Pegasus Mail is probably doing this. This only occurs for emails that are COPYSELF emails. Pegasus Mail adds a special X-CS header to such emails to flag them specially as COPYSELF emails. When Pegasus Mail sees this header in such a message, it knows to display the To: field instead of the From: field within the folder window.
I'm not exactly sure from your email whether you're checking this from Pegasus Mail or from Outlook. Pegasus Mail doesn't have a To: field column in the folder window. This is the reason for the X-CS field in the first place, so that you can see the recipient names rather than your own name.
<P>Pegasus Mail is probably doing this.&nbsp; This only occurs for emails that are COPYSELF emails.&nbsp; Pegasus Mail adds a special X-CS header to such emails to flag them specially as COPYSELF emails.&nbsp; When Pegasus Mail sees this header in such a message, it knows to display the To: field instead of the From: field within the folder window.</P>
<P>I'm not exactly sure from your email whether you're checking this from Pegasus Mail or from Outlook.&nbsp; Pegasus Mail doesn't have a To: field column in the folder window.&nbsp; This is the reason for the X-CS field in the first place, so that you can see the recipient names rather than your own name.</P>