What you may be missing is that all messages can be modified. With plain text and HTML messages, it just takes an extra step to put them into edit mode.
--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/article.aspx?id=54

"Bill Curran" wrote in message ...
We just noticed today that with Exchange 2003 and Outlook 2003, any e-mails
that are received in RTF format can be modified and saved by the receiver.
Plain text and HTML emails cannot be modified. I googled and searched and
found noone else alarmed by this, and it really scares me that people who
have been scared away from HTML emails because they are
blocked/trapped/filtered everywhere have all switched to RTF (because they
gotta have pretty email) and they don't know that without IRM (Information
Rights Management) , these emails can be freely modified by the recipients
and its very difficult to tell that an email has been modified.

Am I missing something obvious here?

Bill Curran
National Steel Car
IT