Don't save embed image that contain into attachements (like signature image)

Question

I work on a VSTO in c#. When I click on button I save attachment in a folder. My problem is : when I have a rich email with an image in the signature, I have a element in my

Answer 1

The flags workaround didn't work for me. I'm developing a solution for Outlook 2016 and I managed to filter the attachments using this code:

foreach (Attachment attachment in mailItem.Attachments)
            {
                //exclude inline images
                if (!mailItem.HTMLBody.Contains(attachment.FileName))
                {
                    //the attachment is not an inline attachment, YOUR CODE HERE
                }
    }

which is basically checking in the HTML body if each of the attachments is mentioned in a tag.

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EDIT: the previous method may skip an attachment if you type its name in the body. This is less likey to skip false positives

if (!mailItem.HTMLBody.Contains("cid:" + attachment.FileName))