Excel VBA: Is Open Workbook an Attachment

Question

Is it possible to tell if a workbook has been opened from an email attachment, rather than a drive/share?

Answer 1

From outlook files are opened to a temp dir on your drive, you could check to see if its in that folder, VBA Source as follows

IsAttachment = (InStr(1, ThisWorkbook.Path, "Temporary Internet Files", vbTextCompare) > 0)