The other part of that is context. The NSA can't come into your house and read your mail for a week. On the other hand, people let google read all of their emai

The other part of that is context. The NSA can't come into your house and read your mail for a week. On the other hand, people let google read all of their email to sell ads. I think there's the idea of a spectrum of intrusion. Looking in windows of a car is a search, but that stuff is already in plain view. Is that unreasonable? We all know email is plain text and the sender does not control routing. It's more like a postcard than a letter to begin with. That said, I'm a weeks worth of surveillance without a warrant is horrifying.