No, the courts have already indicated that email (unencrypted) does not hold the same expectation of privacy as snail mail has established. It's too easy to intercept email. Especially because your service provider can read it. With regular mail, sure someone at the post office can read it, but they have to "destroy" the envelope to do so. Apparently the courts think that makes a big difference. Also, there is a lot of tradition behind snailmail.
Whether the government is able to read your encrypted mail or not is not the point. The point is that they need a search warrant to do so legally. Of course, they can do so without a warrant and try to make their investigation make sense without the benefit of the email information, but I don't think they would do that to bust someone for dealing in 1k of juice.
Whether the government is able to read your encrypted mail or not is not the point. The point is that they need a search warrant to do so legally. Of course, they can do so without a warrant and try to make their investigation make sense without the benefit of the email information, but I don't think they would do that to bust someone for dealing in 1k of juice.