Give your customers the confidence to shop

  • Help increase customer trust: delivery costs aren’t hidden

  • Empower your customers: let them calculate costs and choose best delivery option

  • Help improve conversions: upfront costs can reduce abandoned cart1

  • Save time and money: You spend less time answering customer enquiries about delivery

Get started, it's easy

Our Postage Assessment Calculation API gives your customers real-time pricing on domestic and international postage, and optional features like signature on delivery.

1. Create account

Simply enter your name, email and password to access our API centre.

2. Follow tutorial

See our handy tutorial on how to add the postage calculator to your store.

3. Add postage calculator

Now your customers can calculate delivery costs right from the get-go.

More ways to improve your customer experience

Add delivery options

The Delivery Choices API lets your customers choose the delivery service that best suits them.


Add secure payment

SecurePay lets you process payment securely, and gives customers peace of mind.


1 73% of online shoppers abandon carts at checkout if delivery fee is too high, according to Paypal mCommerce Index report May 17.