They have to get delivery confirmation in addition to the insurance: $250 and under, yuo need delivery confirmation, and over $250 signature confirmation. Me ? I get signature anyway, just so you can prove they signed for it if you hever have a PP dispute or claim..
I think the info is slow to get on the USPS online website, but once it is delivered, it will tell you when and where. The insurance only slip (without delivery conf.) - you just have to wait until it arrives. If it doesn't come in a reasonable amount of time (2 weeks?), go to the post office and inquire and/or file a claim.