Human picks up all the sheets out of the printer, writes out replies with pen
Human puts the stack of answered email sheets in a multi-page scanner
Scanner physically scans them, agent transcribes them and matches them back to the incoming emails via the unique ID on each sheet, sends replies
You could adjust this flow for anything where human input is just one part of a larger sequence: just add print -> write -> scan into your flow where you'd normally have a human type. It's kind of a rebirth of faxing