Of course they do. Traffic analysis is always a problem. They obviously know the src/dst addresses and the package dimensions (including weight), as those featu

Of course they do. Traffic analysis is always a problem. They obviously know the src/dst addresses and the package dimensions (including weight), as those features are necessary for the the delivery. They still don't know what's inside the package. I really don't see why this boundary is hard to understand. With snail-mail (fedex, usps, etc) there are even laws that protect the boundary between the envelope and the private contents. Why would you think software would be different?