We are trying to download attachments of embedded email within an email. Unfortunately embedded email is of type message/RFC822 and does not have any information available even if ItemAttachment is loaded into memory using ItemAttachment.Load().
When we then try to load EmailMessage using ItemAttachment.Item.Load() we get an exception saying "This operations isn't supported on attachments".
Could anyway please help? Spent two days researching how to get it done and after many tries, still without success.