CUSTOM E-COMMERCE INTEGRATIONS

Australian Shopify stores that have grown past the app store integrations for MYOB, StarTrack, and their 3PL need custom API work — the standard connectors stop working correctly at scale

The MYOB and Xero integrations on the Shopify App Store cover standard retail at low order volume. At 100 or more orders per day, the connectors start missing tax line allocations, mishandling freight costs, and failing to post credit notes correctly. The integrations that worked at launch become the reason your accountant spends two days reconciling each month.

This is for you if

Who This Is For

This service is for Australian Shopify brands that have outgrown the integrations available on the Shopify App Store or found them inadequate for their specific accounting, fulfilment, or retail requirements.

Your MYOB or Xero sync is producing reconciliation errors at scale — missed tax lines, incorrect freight allocation, credit notes not posting correctly

Your orders are not reaching your 3PL's WMS automatically, and someone on your team is manually exporting from Shopify and importing into Cin7, DEAR, or a proprietary warehouse system

You have physical retail locations and want to offer genuine click-and-collect with real-time inventory checking at checkout and automated pickup notifications

You sell to both direct-to-consumer customers and wholesale stockists, and your wholesale buyers have no self-service ordering portal

You use Hunter Express for freight and have found there is no maintained Shopify app for it, so carrier booking is manual

What's broken

Four Integration Problems Slowing Australian Shopify Stores

MYOB or Xero sync breaking at volume

The Shopify App Store connectors for MYOB (Amaka, A2X) work correctly for retailers processing 20 to 50 orders per day with straightforward GST, no freight complexity, and no wholesale pricing tiers. When order volume climbs past 100 per day, or when the business involves freight surcharges, complex tax categories, or credit note workflows, the connectors start producing errors that do not surface immediately. A month later, when reconciliation happens, the numbers do not match. Tracking down which orders were misposted and correcting them in MYOB takes hours. Custom API integration between Shopify and MYOB maps each order line, tax line, freight charge, and credit note according to your specific chart of accounts. The mapping is built for your business, not for the median Shopify retailer.

3PL warehouse management system not receiving Shopify orders automatically

Australian brands using a 3PL with Cin7, DEAR Inventory, or a proprietary WMS frequently find that the Shopify integration provided by the 3PL only handles standard DTC orders correctly. Subscription orders from Recharge, wholesale orders from Shopify B2B, or orders with custom fulfilment requirements either do not push to the WMS at all or push with incorrect data. The 3PL's team calls the brand to say an order is missing. Someone on the brand's team exports the order from Shopify and re-enters it manually. A custom integration layer handles each order type — DTC, subscription, wholesale, and click-and-collect — and routes them to the WMS with the correct fulfilment instructions, carrier selection, and product codes.

Click-and-collect not connected to Shopify inventory

Australian brands with physical retail locations alongside their Shopify store face a specific inventory problem: the online store does not know what stock is available in each physical location at the moment a buyer checks out. A buyer selects "Collect from Fitzroy" and checks out. If the Fitzroy store is out of stock of that item, the brand finds out after the order is placed and has to contact the buyer. There is no real-time inventory check at checkout for location-specific stock, and there is no automated "your order is ready for collection" notification. A custom click-and-collect integration connects Shopify's location-level inventory to the checkout flow, checks in-store stock before confirming the order, and triggers a pickup-ready notification to the buyer when the store team marks the order as packed.

Australian B2B wholesale portal absent

Australian brands selling to wholesale stockists — gift shops, homewares boutiques, independent retailers — typically manage those wholesale buyers outside Shopify. Price lists go out by email. Orders come back by reply email or phone. There is no self-service, no order history visible to the buyer, and no automated invoice generation. A Shopify B2B portal with tiered pricing, trade account management, and NET 30 payment terms gives wholesale buyers a self-service ordering experience. Orders flow into Shopify directly. The brand's team sees wholesale orders alongside DTC orders in the same admin and processes them in the same fulfilment workflow.

What we engineer

Custom E-commerce Integrations We Build for Australian Stores

MYOB and Xero Custom API Integration

We build a custom API layer between Shopify and your MYOB or Xero account that maps order lines, GST allocations, freight charges, and credit notes according to your specific chart of accounts. The integration handles high-volume reconciliation correctly and does not depend on an app store connector that has not been updated for your specific accounting configuration.

3PL Warehouse Management System Integration

We build a custom integration between Shopify and your 3PL's WMS — whether that is Cin7, DEAR Inventory, or a proprietary system. The integration routes all order types (DTC, subscription, wholesale, click-and-collect) to the WMS with correct fulfilment instructions, carrier selection codes, and product data. Your 3PL team does not receive manual order entries from your team.

Click-and-Collect Integration

We connect Shopify's location-level inventory to your checkout flow so that buyers selecting in-store pickup see real-time stock availability for their chosen location. We also build the post-purchase notification flow: when a store team member marks a click-and-collect order as packed in Shopify, the buyer receives an automated pickup notification via email or SMS.

StarTrack, Toll Group, and Hunter Express Carrier Integration

StarTrack and Toll Group can be connected to Shopify via EasyPost or carrier-specific apps for standard setups. Hunter Express requires custom API integration. We build carrier integrations that automate label generation, tracking number return, and buyer notification for each carrier in your shipping stack.

B2B Wholesale Portal

We build a Shopify B2B ordering portal for your Australian trade buyers, with tiered pricing per account, minimum order values, NET 30 payment terms, and trade account management. Wholesale orders flow directly into your Shopify admin.

What changes

What Changes After These Integrations Are Built

Before
After
Before The Shopify App Store connectors for MYOB (Amaka, A2X) work correctly for retailers processing 20 to 50 orders per day with straightforward GST, no freight complexity, and no wholesale pricing tiers. When order volume climbs past 100 per day, or when the business involves freight surcharges, complex tax categories, or credit note workflows, the connectors start producing errors that do not surface immediately. A month later, when reconciliation happens, the numbers do not match. Tracking down which orders were misposted and correcting them in MYOB takes hours. Custom API integration between Shopify and MYOB maps each order line, tax line, freight charge, and credit note according to your specific chart of accounts. The mapping is built for your business, not for the median Shopify retailer.
After Month-end reconciliation becomes routine. When MYOB or Xero receives correctly mapped order data — tax lines, freight, credit notes — the reconciliation process is a check rather than a correction exercise. Your accountant's time on Shopify-related reconciliation drops significantly.
Before Australian brands using a 3PL with Cin7, DEAR Inventory, or a proprietary WMS frequently find that the Shopify integration provided by the 3PL only handles standard DTC orders correctly. Subscription orders from Recharge, wholesale orders from Shopify B2B, or orders with custom fulfilment requirements either do not push to the WMS at all or push with incorrect data. The 3PL's team calls the brand to say an order is missing. Someone on the brand's team exports the order from Shopify and re-enters it manually. A custom integration layer handles each order type — DTC, subscription, wholesale, and click-and-collect — and routes them to the WMS with the correct fulfilment instructions, carrier selection, and product codes.
After Your 3PL stops calling to report missing orders. When every order type routes to the WMS automatically with correct fulfilment data, the 3PL team processes orders without manual intervention from your side. Orders dispatched faster, fewer exceptions, less back-and-forth.
Before Australian brands with physical retail locations alongside their Shopify store face a specific inventory problem: the online store does not know what stock is available in each physical location at the moment a buyer checks out. A buyer selects "Collect from Fitzroy" and checks out. If the Fitzroy store is out of stock of that item, the brand finds out after the order is placed and has to contact the buyer. There is no real-time inventory check at checkout for location-specific stock, and there is no automated "your order is ready for collection" notification. A custom click-and-collect integration connects Shopify's location-level inventory to the checkout flow, checks in-store stock before confirming the order, and triggers a pickup-ready notification to the buyer when the store team marks the order as packed.
After Click-and-collect becomes a genuine retail offering. When the checkout checks real in-store stock before confirming a collection order, and when the buyer gets an automated notification when their order is ready, the click-and-collect experience matches buyer expectations. Returns and cancellations caused by out-of-stock surprises stop.
Before Australian brands selling to wholesale stockists — gift shops, homewares boutiques, independent retailers — typically manage those wholesale buyers outside Shopify. Price lists go out by email. Orders come back by reply email or phone. There is no self-service, no order history visible to the buyer, and no automated invoice generation. A Shopify B2B portal with tiered pricing, trade account management, and NET 30 payment terms gives wholesale buyers a self-service ordering experience. Orders flow into Shopify directly. The brand's team sees wholesale orders alongside DTC orders in the same admin and processes them in the same fulfilment workflow.
After Wholesale revenue is tracked in Shopify. When wholesale buyers order through a self-service portal, every order is in Shopify. You have buyer order history, repeat order frequency, and revenue per stockist in the same reporting view as your DTC business.
How it works

How We Build Custom Integrations

  1. 01

    Integration Audit

    Week 1

    We review your current Shopify configuration, your MYOB or Xero chart of accounts, your 3PL's WMS and its existing Shopify connection, and your physical retail inventory setup. We document where the current integrations are failing and what data is either missing or mapping incorrectly.

  2. 02

    Integration Specification

    Week 1-2

    We write a one-page specification per integration covering the data flow, the field mapping, the error handling approach, and the test criteria. For MYOB and Xero integrations, the specification includes a line-by-line mapping of Shopify order fields to MYOB or Xero account codes. You review and approve before development begins.

  3. 03

    Development

    Weeks 2-5

    We build each integration in a Shopify development environment connected to sandbox or staging environments for MYOB, Xero, and the 3PL WMS. No live accounting data is touched until the integration is tested and approved.

  4. 04

    Testing and Handover

    Week 5-6

    We run end-to-end tests covering each order type, each carrier, and each accounting scenario. For MYOB or Xero integration, we run test orders through the full reconciliation flow and verify the output against the expected chart of accounts mapping. We provide your team with operating documentation covering the integration behaviour and how to handle exceptions.

  5. 05

    Post-Launch Support

    We monitor integrations for the first 30 days post-launch and handle any edge cases that appear in production. We offer ongoing retained support for integrations that require regular maintenance as APIs and accounting configurations change.

Common questions

Frequently Asked Questions

How do I integrate MYOB with Shopify for correct GST reconciliation at high order volume?

The standard Shopify-MYOB connectors on the App Store (Amaka, A2X) map Shopify orders to MYOB sales invoices using a fixed field mapping that works for standard retail but breaks when orders include multiple tax categories, freight surcharges, or credit notes from returns. A custom API integration between Shopify and MYOB uses the MYOB AccountRight Live API to post each order with a field mapping built specifically for your chart of accounts — separating product GST, freight GST, and any GST-exempt lines into the correct MYOB accounts so the BAS reflects the actual tax position without manual correction.

How do I connect my 3PL warehouse management system to Shopify for automated order fulfilment?

Connecting a 3PL WMS to Shopify requires mapping each Shopify order type to the WMS's expected order format and routing logic. For brands using Cin7 or DEAR Inventory, the Shopify App Store integrations handle standard DTC orders correctly but often fail to route subscription orders, B2B orders, or click-and-collect orders with the right carrier and warehouse instructions. A custom integration layer sits between Shopify and the WMS, receives all order types via Shopify webhooks, and posts them to the WMS with the correct fulfilment instructions based on the order type, the delivery address, and the carrier selection rules.

How do I build a click-and-collect integration for an Australian Shopify store with physical retail?

A genuine click-and-collect integration requires three technical pieces: a real-time inventory check at checkout that reads location-specific stock levels in Shopify before confirming the order, a pickup location selector that presents only locations that have the selected SKUs in stock, and a post-purchase notification trigger that fires when a store team member marks the order as ready for pickup. Shopify's native Local Pickup feature handles the pickup location selection but does not perform a real-time stock check at the checkout level; a custom integration is required to add the inventory check and the pickup-ready notification automation.

How do I set up a Shopify B2B wholesale portal for Australian trade buyers?

Shopify B2B (available on Shopify Plus) supports trade account management with separate price lists per buyer or buyer group, minimum order values enforced at checkout, and NET 30 payment terms via Shopify's built-in payment terms feature. For Australian wholesale setups, the configuration typically includes: a separate price list per tier (e.g., boutique, distributor), minimum order values in AUD, and a trade account application form that triggers account approval before the buyer can access wholesale pricing. Orders placed through the B2B portal post directly to Shopify and can be pushed to your 3PL WMS through the same fulfilment integration as your DTC orders.

What is the best way to integrate StarTrack or Toll Group shipping with Shopify for Australian fulfilment?

StarTrack and Toll Group both support integration via the EasyPost multi-carrier API, which has a maintained Shopify app and handles rate fetching, label generation, and tracking number return for both carriers. Hunter Express is not supported by EasyPost and requires a custom direct API integration against the Hunter Express API for label generation and tracking. For brands using all three carriers, the practical approach is to use EasyPost for StarTrack and Toll Group and build a custom Hunter Express integration that connects to the same Shopify fulfilment workflow, so all carrier bookings happen from a single interface in Shopify rather than across separate portals.

Our team

The people behind the work

Not a black box. Real specialists you can call, with their names on the work.

Niraj Raut

Niraj Raut

Founder — Ecommerce SEO
Keshab Joshi

Keshab Joshi

PPC Expert
Hawrry Bhattarai

Hawrry Bhattarai

Google Ads Expert
Arogya Rijal

Arogya Rijal

SaaS SEO Expert
Start here

Get an Integrations Brief for Your Australian Shopify Store

If your MYOB reconciliation is producing errors at volume, your 3PL is not receiving all order types automatically, or your click-and-collect workflow is still manual, the problem is a gap in your integration architecture. We will review your Shopify setup, map the specific data flows that are failing, and give you a plain-language brief covering what needs to be built, how long it will take, and what it will cost.