This was the quote that had me nodding my head.
“Additionally, FedEx could not use its own business decision “to store huge amounts of information … as a shield” against reasonable discovery requests.”
So if searching and producing that amount of email is as impossible as you’re claiming, why did you keep it? What was the point of keeping it if not to later search it for important information?
Truly, this is a silly argument. But it is a good argument for strong some information governance work, which would have asked those questions.