Use Windows Rights Management or one of the security services listed at http://www.slipstick.com/addins/security.htm#services

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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/jumpstart.aspx

"Ursula A." wrote in message ...
I would like to prevent receipients of my e-mails from editing the text of my
message. What do I need to do?
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Many thanks, and have a good day
Ursula A.