Snail mail is also sent by postmen (who can open and read it, or just read it if its a postcard), and telegraphs (still a thing?) are dictated to someone. That doesn&#x27;t mean people expect or would like having them read by a non-involved person, outside of those necessary reasons for their delivery.<p>If &quot;expectation&quot; is the criterion, how about actually asking people what they actually expect with a poll of sorts?<p>The whole &quot;expectation of privacy&quot; as a metric is bogus.<p>Then again, those are the same people who read gun laws regarding &quot;militias&quot; as valid for 20-21st century individuals (and I&#x27;m not saying this as someone anti-gun -- just that, if you like guns and want them, just pass a law saying that, not use some 3 century old unrelated law as an excuse with all the pomposity of the Supreme Court, as if some redneck with a liking for guns is part of a &quot;well regulated militia&quot;).