Used this dozens of times every month. Works every time (so far)
Its free...so its *NOT* tracking like the green .40c tag is.
The green tag, gets scanned at delivery, and you can check progress during shipping as it gets scanned throughout the system.
This FREE service, is more delivery confirmation, only gets scanned *after* the item is delivered, and updated a few days after, in their system.
Choose which you need more, and dont whine about how a *free* service works, use it, or not, your choice.