There could be any number of copies. The sender, the receiver, the senders email server, the receivers email server, numerous servers in between, any one who is ccd or blind cc’d, any server rules set up to forward or copy the emails, etc.etc.
it brings a whole knew meaning to paper trail.
Thank you for expanding my thinking.
Now for a group with the guts to drill down to the data you referenced...
And possibly higher.