I just got 100%, and I never saw this e-mail. Did anybody get more than 7 e-mails (in game, not counting somebody else sending you something)?
I saw a post by a Telltale staff member a little while ago implying that the "head size" e-mail was sort of a hint, so I'm thinking maybe that you get more e-mails (hints) if you have hints on "high", which I didn't. I don't know what this would be a hint for, though.
Did this e-mail just get cut before release?