The Australia Post tracking page is a place to monitor items that are being tracking using their tracking numbers.
The page consists of a form with fields and buttons, click, type, click, wait....
Some times it is important to send this tracking number to a customer, but to have them reenter a number into a form is not efficient.
Here is a way of integrating the tracking number directly to the URL via a query.
Where XXXXXXXXXXXXX is the tracking number.
Be sure to try it before sending it off to people via email.