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Problem Receiving RTF Email Format Attachments....

Dec 28 '16 at 17:01

We are using the Chilkat software (ChilkatDotNet2.dll) version for one of our applications to get the email attachments and save them to our local windows drive.

Our clients send the PDF attachments in an email with the message format - RTF (Rich Text Format) and the Chilkat software is reading the PDF attachments (of the email that is sent in RTF) as a single attachment with the file - winmail.dat & returning the attachment content type as ""application/ms-tnef"". However, the receiver's email inbox contains the PDF attachments of the RTF email message format and not the winmail.dat file but Chilkat software is reading the attachment as winmail.dat.

How Chilkat handles the attachments of the RTF email message format?


Winmail.dat is a proprietary Microsoft formatted file (TNEF) containing RTF text. See: What is the winmail.dat attachment?.

The sender should use HTML or Plain Text sending instead as per this MS bulletin:

Recipients receive a winmail.dat attachment