No, congress and the tech companies have the incorrect understanding that phone calls and emails going through a third party gives that third party consent to share them with the government.
4A as it has been interpreted is woefully inadequate for privacy protections in the modern world. Absent a complete change in how the courts do this, we need laws like ECPA (but better), technical countermeasures and a strikedown of laws like CALEA (which is unconstitutional already), or a constitutional amendment explicitly protecting privacy. Or all 3.
Yes, I'm being flippant with the terminology. I know that to be true but strongly disagree that we should have no reasonable expectation of privacy for emails. Telephone calls go through a third party and they are covered.
Yes, but telephone calls are covered because Congress passed a law making it so, not because of a Supreme Court ruling per se. Separate laws had to be passed to protect cell phone calls, beepers, etc.