iNotes / DWA placing mail in Sent FOLDER on Sending

As part of an email Management and Retention implementation, I am attempting to modify our mail template (iNotes6.ntf) to Put a copy of the Sent mail in a Folder (in addition to appearing in the Sent View which we are hiding). The code I added in CoreEmailClasses/QueryCloseExtension function works for the Notes client, and I have modified the NotesMailOutline and iNotesOutline to show the appropriate folder for SENT, BUT…

I haven’t been able to figure out how (or where) to modify the Send in iNotes/DWA. (Needless to say, I’m not a developer.)

Does anybody out there have any ideas about how to go about this?

Thanks in advance.