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Winmail.dat TNEF


I’m having the same problem as described here:

Evaluating- question about TNEF

Could you provide some example code to extract the attachments from winmail.dat?


Alfonso de las Heras

Finally I did it with the OpenPOP Library, it can be downloaded at

Anyway, if there is a way to extract those attachments with ASPOSE.Network, please let me know.


Could you give me some sample eml files that contain the winmail.dat ? We will provide such feature ASAP.

Thanks for your help.

I’ve sended it to your email adress.

When I open that eml file with Outlook express i cannot see the attachment, but with aspose.network you can check that there is a attached file called winmail.dat instead of the Word document I attached.

More hints:
- when I receive that email in Outlook (not Express), winmail.dat doesn’t appear, instead the word document is there.
- the email was created and sent with Outlook 2007

As I said before, I managed to extract the Word document from winmail.dat using the OpenPop library. I would prefer to use only ASPOSE if possible, so it would be great if you could develop that functionallity in the future.