Get file extension when extension is not shown (Email msg attachments in outlook)

Question

I have a program that uses EWS to pull emails from an exchange server, gets the attachments off of them and converts them to PDFs. Before I convert them, I check all of the extensions of the attachments to make sure they are something I can handle.

My problem is when an email (msg) is the attachment in an email. In outlook/exchange, these do not show the extension, so any way I try to pull the extension, I get nothing or something incorrect like .itemattachment.

score 0 · Answer 1 · answered Sep 05 '14 at 20:28

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Is it an actual MSG file or an embedded message attachment? In the latter case there is no extension, or even a file name for that matter.

answered Sep 05 '14 at 20:28

Dmitry Streblechenko

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I'm not sure of the difference. It's an outlook email sent as an attachment in a new email – user2615372 Sep 05 '14 at 20:29
There is a pretty big difference - what is the content type of the attachment? You might want to post the whole MIME header of the attachment. – Dmitry Streblechenko Sep 05 '14 at 20:48

score 0 · Accepted Answer · answered Sep 09 '14 at 13:05

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I was able to solve this problem by loading the item attachment and the pulling the data from it. I put the data in html format then convert that to pdf. I just do a check first to see if the type of attachment is file or item

answered Sep 09 '14 at 13:05

user2615372

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I know that thread is old,...but what exactly do you mean by that? – inzanez Sep 13 '22 at 12:04

Get file extension when extension is not shown (Email msg attachments in outlook)

2 Answers2