I was at the PO today and sent a small package. The price for basic postage had gone up to $6.95 but it now includes an online tracking number which is printed on the label and the receipt. However, I also bought a 'signature required' sticker for an extra $2.95 just to be sure of PP seller protection. It had the exact same number as on the label, though -- even the PO employee didn't understand it!

I don't use click and send.