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Certain Attachments Arrive as Winmail.dat file
Problem reported by Jeffrey Wilkinson - 2/18/2021 at 2:21 PM
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Running the lastest build, 7699.  Any idea why certain image attachments sent via Outlook 2016 arrive as winmail.dat files in a mobile device?  The only workaround seems to be having Outlook compose the message as plain text only, no html.

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Kyle Kerst Replied
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Hello Jeffrey, normally this points at messages being sent in RTF format within Outlook. When configured this way Outlook will send attachments in winmail.dat format. I believe you can simply switch the compose format to something like plain text and that should clear up those dat files. Hope that helps!
Kyle Kerst
Technical Support Specialist
SmarterTools Inc.
(877) 357-6278
www.smartertools.com

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