Outlook 2010 has the ability to delete redundant emails from a conversation. Redundant emails are those which were replied to and the reply contains their content already. Assuming the original mail does not contain attachments - it can be deleted.
The use for such an ability is to conserve disk space - maintaining the original message does not provide much benefit as is.
Is there a tool/macro that can be used to provide this functionality in Outlook 2007?