There is no simple way to do this. You could use a rule with a macro script to process the returned messages, save the attachments to a temporary file, then read the file to extract the e-mail address to Excel, but in order to suggest a method to achieve that I would need to know the name of the attachment and the content of it.

__________________
Graham Mayor - MS MVP (Word) (2002-2019)
Visit my web site for more programming tips and ready made processes www.gmayor.com