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We use Chilkat IMAP connecting to an Exchange 2010 SP3 Server. Recently (don't know exactly when) we have seen that when an email is saved as an eml file, any attachments of type msg (Outlook Item) are getting converted to either an mht file, or a filename without an extension, and we are unable to view it.

Has anyone come across this before, and if so how do we ensure msg files remain as such?


asked Sep 11 '14 at 12:12

Rodkort's gravatar image


Chilkat would not be trying to convert attachments in any way. Also, the filename would come from the sub-header associated with each attachment within the MIME. Open the MIME in a text editor to see what they are. A few other points:

  • MHT and EML are both MIME. The file extension indicates the default program that should be used to open it (and thus define the semantics of the content -- i.e. what it is). For EML, it is an email to be opened by the default email program, and for MHT, it's a web archive for Internet Explorer.
  • Usually, a .msg file from Outlook is not MIME -- it is the binary Microsoft msg format -- unless for some reason the .msg actually contains MIME.

answered Sep 11 '14 at 22:18

chilkat's gravatar image

chilkat ♦♦

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Asked: Sep 11 '14 at 12:12

Seen: 878 times

Last updated: Sep 11 '14 at 22:18

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