WINMAIL.DAT

WINMAIL.DAT

A file that contains RTF format codes in order to support rich text in email messages. WINMAIL.DAT is a UUencoded file that is sent from a Microsoft Outlook or Exchange email client. If the recipient email system is not Exchange or cannot decipher RTF, WINMAIL.DAT winds up as an attachment that is not processed. Outlook may also be configured to use WINMAIL.DAT as a wrapper to encapsulate attached files. See rich text and UUencode.
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Q EVERY email I send attaches a winmail.dat file to the outgoing message.
Los Angeles, CA, October 13, 2013 --(PR.com)-- Enolsoft Co., Ltd., a professional multimedia software developer, today publishes Winmail Viewer for Mac which is a smart letter opener to open Winmail.dat files instantly for Mac users.
Well, Winmail.dat files are attachments sent by Microsoft mail applications (Outlook, Outlook Express or Exchange) on a proprietary format called TNEF (transport neutral encapsulation format).
And just as one of the users - Lilly commented: "I received an e-mail included a winmail.dat file that I couldn't open.