Interesting ruling in the US: "an e-mail provider did not break the law in reading his customers' communications without their consent.". "...the court found that because the e-mails were already in the random access memory, or RAM, of the defendant's computer system when he copied them, he did not intercept them while they were in transit over wires and therefore did not violate the Wiretap Act... The court ruled that the messages were in storage rather than transit.".
Of course, this opens up all sorts of new possibilities, doesn't it? Imagine if the local law enforcement no longer has to apply for a wiretap before they can do start just reading your mail out of cache.
Of course, all this would have been avoided using end-to-end PKI, yay.