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Product Details:
- Product Family: Act!
- Product: Act! Pro, Act! Email
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Environment:
- Third Party: Microsoft Outlook
Cause:
This issue can be caused by a setting in Microsoft Outlook that enables a type of formatting (TNEF Encoding) used when sending emails between Microsoft email clients. When an email formatted as such is received by a non-Microsoft email client, the email appears unformatted, and the formatting data is attached as a "winmail.dat" file.
For information on managing this setting please see the article below:
How e-mail message formats affect Internet e-mail messages in Outlook
Please note: This article is provided by Microsoft and is linked here purely for your convenience.