“You can’t review 650,000 emails in eight days,” Trump said Sunday … “You can’t do it folks. Hillary Clinton is guilty.”

Clearly Trump has no idea about "big data" (but isn't afraid to speak authoritatively about it). Any pattern matching software would identify all the e-mails that were already in the database in an hour (using a desktop machine). Then use a regular expression search to exclude all the "Carlos Danger" e-mails, and you are left with whatever is new, which was apparently close to zero.