Article ID: 193117 - Last Review: December 9, 2000 - Revision: 1.0 OL98: (IMO) Winmail.dat Attachments Included in Received MessagesThis article was previously published under Q193117 NOTE: These procedures only apply if you have installed Outlook with the Internet Mail Only option. To determine your installation type, click About Microsoft Outlook on the Help menu. If you have the Internet Mail Only option installed, you see "Internet Mail Only". For information about the differences between Microsoft Outlook and Microsoft Outlook Express e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base: 257824
(http://support.microsoft.com/kb/257824/EN-US/
)
OL2000: Differences Between Outlook and Outlook Express SYMPTOMS
When you use Microsoft Outlook 98 to send e-mail through the Internet, some
recipients using e-mail clients other than Outlook, report that the mail
message includes an additional file called Winmail.dat. The file is usually
very small, but cannot be opened in the mail message.
CAUSE
The Winmail.dat file is used to preserve formatting that the sending client
includes in the message, but is not recognized by the receiving client. In
the case of Outlook, the Winmail.dat file includes Rich Text Formatting
(RTF) instructions.
RESOLUTION
To avoid including Winmail.dat, use the Plain Text mail format. To select
Plain Text for all messages, follow these steps:
REFERENCES
For more information on Winmail.dat attachments, please see the following
articles in the Microsoft Knowledge Base:
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