Sadly I missed today's live stream but picked up that exchange on youtube and then played it to my Mrs who works as a legal secretary
I asked her "is he saying someone else picked up this email and then printed it?"
She said "it seems that way, but if the email was automatically forwarded to his secretary (as happens at her work place) who read it and then printed off the attachments, then there would be a record of it being forwarded, and even so, if his secretary printed off the attachments, then she would have put them on his desk for him to read"
Wifey then said "perhaps he's asked his secretary to bail him out with this and she's said "you can fuck right off"
So if Singh didn't read it, save it or print it, who had access to his computer?