I used the normal USPS priority confirmation slip on hundreds of packages for years, and I don't recall ever having one that didn't get logged in after it was delivered. Since we finally switched to click & ship, I've found that maybe 1/4 of them don't get logged when delivered. Some never get past the "we were notified" stage. What's up with that? Why would it be so different? I asked the postal workers and just got a blank stare of course.