I have a problem with your approach.
The mail is forwarded. It is no longer the property of the originator, since the person forwarding may have modified the text. Thus, forcing the name of the originator is not giving the reader an objective view of the information, since it is not the originator that sent the mail.
You might want to look into newsletter functionality. If something is to be sent to many people, then that something could be created in a database (not a mail db) and a link sent to the people.
They could then use the link to access the original information - instead of copying the info to all the people.
Makes mailbox size smaller, for a small additional cost in bandwidth use.
Pascal.