How email message formats affect Internet email messages in Outlook - Microsoft SupportSummary Both Microsoft Outlook and the Microsoft Exchange Client sometimes use a special method to package information for sending messages across the Internet. This method is technically known as Transport Neutral Encapsulation Format (TNEF). Technical information on TNEF is available at the following MSDN website: http://msdn.microsoft.com More information The use of TNEF is typically affected b
