FBI Director Comey says there is nothing in the Weiner computer emails

This is the 600,000 odd emails found on Anthony Weiner's computer.  How in the name of all that's holy can anyone, any gang of agents look at 600,000 emails in eight days?  That's 75000 emails a DAY.  Maybe the FBI had a computer program scan them looking for keywords?  That sounds sorta flaky.  Any how, the FBI director said he wasn't going to prosecute Hillary again last night.