Australia Post and StarTrack for OpenCart — prices, labels, tracking

Australia Post and StarTrack Shipping is a shipping module for OpenCart 4, 3 and 2.3: Australia Post prices at checkout, a label from the order with the price shown before you buy it, a dispatch order with the order summary PDF for the pickup, and tracking. It works on your own keys, with no middleman.

Retail prices only need the free PAC calculator key, no contract. Labels need an eParcel contract and a Shipping and Tracking API key; StarTrack and contract prices at checkout are in Pro. Sendle is not included: the company stopped trading in early 2026.

What the buyer sees

The buyer sees Australia Post Parcel Post and Express Post priced in the shop currency, and international services by weight for parcels abroad. If no price comes back, the fallback price you set is shown. The shop’s other shipping methods can sit next to it.

What the admin gets

The order page gets an Australia Post / StarTrack panel: weight, dimensions, state, phone, Authority to Leave. You see the label price first, then buy the label and open the PDF. Until it is dispatched the label can be deleted, and a carrier refusal is shown right in the label row.

The labels page gathers the day’s work: you create a dispatch order for the pickup and print the order summary PDF. The tracking number goes to the buyer by e-mail and to the order history, and the status refreshes with a button.

How it works, step by step

1. You enter the PAC key and, with a contract, the API key and account numbers.
2. You pick the services and a fallback price.
3. The buyer sees Australia Post prices at checkout.
4. On the order page you check the label price and buy the label.
5. Before the pickup you create a dispatch order and print the order summary.
6. The buyer gets the tracking number by e-mail.

Under the hood

• One shared library for OpenCart 4, 3 and 2.3: the same behaviour in every version.
• Requests go straight to Australia Post, not through our server.
• Keys and passwords are stored encrypted.
• Label PDFs are kept in the shop.

How to install

1. OpenCart 4: Extensions → Installer → upload cc_auspost.ocmod.zip and install. Keep the file name: it is the extension code.
2. OpenCart 3: Extensions → Installer → cc_auspost-oc3.ocmod.zip, then Extensions → Modifications → Refresh.
3. OpenCart 2.3: Extensions → Installer → cc_auspost-oc23.ocmod.zip (or copy upload/ to the shop root by FTP), then Modifications → Refresh.
4. Extensions → Extensions → Shipping: install the module and open its settings.
5. On the Connection tab enter the PAC key and, with a contract, the API key, then save and check the connection.
6. For Pro: paste the key or start the 7-day trial on the licence tab.

All three archives are included: separate builds for OpenCart 4.0.2+, 3.x and 2.3.