Just to add to the comments about not trusting the USPS informed delivery for any sort of notification – today my D20 received her welcome packet from another school and this wasn’t even listed in informed delivery as a mail piece they “didn’t have a scan for” like I have seen before. This packet was not listed at all in my informed delivery so I expect that anyone receiving the “white box” may not even get notice that something is coming that USPS can’t scan/show. How fun to just open the mailbox and see! 