Yes, and without qualification.
Yes, but limited (please elaborate on limits).
No, we really don't need it.
I agree that the 4th amendment should already protect our right to privacy but the Supremes have not agreed consistently. A clarifying amendment might be helpful such as
"the right of the people to be secure in their persons, houses, papers, and effects includes all forms of communication intended for a limited number of recipients."
I also support this consenting adults amendment:
"The private, consensual behavior of adults that does not result in direct harm to another party shall not be subject to government regulation."