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DWmail Winmail Decoder

What is DWmail™ Winmail Decoder ?: DWmail™ Winmail Decoder is a Windows application that parses and decodes Winmail.dat email attachments to usable formats.

Transport Neutral Encapsulation Format or TNEF is a proprietary e-mail attachment format used by Microsoft Outlook and Microsoft Exchange Server. An attached file with TNEF encoding is most usually called winmail.dat or win.dat and has a MIME type of Application/MS-TNEF.

If you are a Microsoft Exchange administrator. This knowledge base article describes how to prevent this file being sent to Internet email users.

DWmail Winmail decoder screenshot

Download Download DWmail Winmail decoder 1.0

System Requirements

  • Windows 2000, Windows XP or Windows Vista
  • .NET Framework 2.0

Current Version

Version 1.0 released 20th February 2008


Does the DWmail Winmail Decoder come with any third party software?

The only software that comes with the DWmail Winmail Decoder is the program needed to install the application. The application uses a library licensed under the LGPL based on that from OpenPOP called TNEFAttachment. The source is available here. This library has been modified by Dominion Web

I can't install DWmail Winmail Decoder?

You will need administrative privileges over your operating system. DWmail Winmail Decoder also requires the .NET framework.

How do I uninstall DWmail Winmail Decoder?

In your control panel click on 'Add/Remove Programs' and select 'DWmail Winmail Decoder' and the 'Remove' button.






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