Email Constitutionally Protected
From the Center for Democracy & Technology:
A federal appeals court has ruled that an ordinary email user has a reasonable expectation of privacy — and thus a Constitutional privacy right — in email stored with an ISP. This means that the government either obtain a search warrant based on probable cause to seize such email or give users notice and opportunity to object to a subpoena or court order. The Justice Department had argued that email was not constitutionally protected. CDT participated in a friend of the court brief in the case which the court cited as “convincing”.
If you are interested in the details, the Appeals Court opinion is available.