Is there any doubt? These are the guys that record every credit card transaction, phone call and airline reservation, right? And process it in realtime. That's a billion records a day. 650000 emails is a pimple on the butt of that.
But how many people even understand how email works (and by that I don't mean the nitty gritty of IMAP), but for example not understanding not to "reply all" telling everyone to stop "replying all" and instead simply setting up an email filter?