Absolutely. The fourth amendment to the US Constitution protects you from illegal search and seizure. Your email is not considered to be in "plain view," because you have an expectation of privacy between you and the sender. Fear is no excuse for violating the 4th amendment rights of every American. People that say "Why not, I have nothing to hide?" are idiots. They don't see the big picture or even understand why we have rights to privacy in the first place. It's the same as saying, "Why not force me to walk around completely naked, I have nothing to hide." Our rights are their for a reason and should be respected.