forwarded and replied messages /outlook

Is there an option in Outlook inbox that allows the sender to preview a message that is added as part of a fowarded or reply mail? I have a situation where my client recieves mail that needs to be forwarded with his comments added on. he can view the original forwarded mail in his preview pane but can’t see his added comments.I have checked email options and current view customization.. not much help there.. Any input would be appreciated.