&gt; Constitutionally, privacy is a pretty cut-and-dry concept.<p>That&#x27;s true. Privacy is anything you kept on your own person or in your own property.<p>Emails however, are stored on another person&#x27;s computer and therefore have no expectation of privacy. (some 1980s case IIRC).<p>Constitutionally, privacy is a cut-and-dry concept for the 1800s when the Bill of Rights were written. The fact of the matter is, the people who wrote the Constitution had no concept of &quot;Cloud Computing&quot; or &quot;Computing&quot; in general.<p>So it is up to the job of today&#x27;s Politicians and Judges to figure out what to do in these cases. And that isn&#x27;t a very easy job to do.