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Shopify Plus + Sellsy

Connect sales and finance workflows in Sellsy by connecting Shopify Plus to unify data flows, automate operations, and support complex commerce environments at scale.

Shopify Plus
Synchron.io

Seamless automation with Shopify Plus

Shopify Plus to Sellsy workflows

Connect Sellsy with Shopify Plus to automate workflows, synchronize data in real-time, and enhance efficiency across your business processes.

Support enterprise commerce growth with Shopify Plus by integrating Sellsy to unify CRM, invoicing, payments, cashflow, and commercial operations in one connected environment.

Sellsy is a CRM and financial management platform for growing businesses that brings together sales, invoicing, payment follow-up, and cashflow tools in a single system. It is well suited to teams that want to align commercial activity with day-to-day financial operations.

Integration overview

How Shopify Plus and Sellsy work together

The Shopify + Sellsy V2 integration connects your Shopify store with your Sellsy account so that sales, refunds and stock levels stay aligned between the two systems. Shopify remains your ecommerce front-end, while Sellsy handles invoicing and, if you choose, stock management.

With this integration, paid Shopify orders are turned into invoices in Sellsy, Shopify refunds generate matching credit notes, and stock movements recorded in Sellsy can update Shopify inventory. This reduces manual work and the risk of errors between your online store and your back-office tools.

It is designed for merchants who sell online with Shopify and manage invoicing and/or inventory in Sellsy. Key benefits include avoiding re-typing orders, keeping stock in sync, and reducing mistakes in invoicing and refunds.

Data flows

Core sync directions

  • From Shopify to Sellsy (sales & refunds) Paid Shopify orders are imported into Sellsy as invoices. When orders are refunded in Shopify, corresponding credit notes are created in Sellsy so your accounting stays up to date. Shopify is the source of truth for orders and refunds, while Sellsy is where you follow up with invoices and credit notes.
  • From Sellsy to Shopify (stock levels) Stock movements in Sellsy are used to update available inventory in Shopify. Sellsy acts as the stock “master”, and Shopify reflects the latest sellable quantities.
  • Orders → Invoices (Shopify → Sellsy) Runs on a schedule every 15 minutes, looking back over the last 3 hours of orders. You can also trigger a manual import to backfill or test specific periods.
  • Refunds → Credit notes (Shopify → Sellsy) Runs on a schedule every 30 minutes, looking back over the last 2 hours of refunds. A manual import is also available.
  • Stock movements → Inventory (Sellsy → Shopify) Runs on a schedule every hour, looking back over the last hour of stock changes in Sellsy. There is no manual import for stock.
  • Customers: The integration attempts to match Shopify customers with existing Sellsy customers. When no match is found, new customers can be created in Sellsy from Shopify data.
  • Products & SKUs: Product matching relies on the Shopify SKU. To avoid errors for invoices, credit notes and stock updates, ensure all Shopify products have valid SKUs that match the corresponding products in Sellsy.

Use cases

Typical scenarios for this integration

  • You want every paid Shopify order to generate an invoice in Sellsy automatically.
  • You want Shopify customers to be created or matched in Sellsy without manual maintenance.
  • Your finance or accounting team uses Sellsy as the main invoicing tool.
  • You want to reduce manual keying of orders and minimise invoicing mistakes.
  • You process refunds in Shopify but want matching credit notes in Sellsy for accounting.
  • You want to reduce manual work re-creating refund documents in Sellsy.
  • You want a clear link between Shopify refunds and Sellsy invoices/credit notes.
  • You need your Sellsy credit notes list to stay up to date with online returns and cancellations.
  • You manage stock primarily in Sellsy, and Shopify should follow.
  • You want to avoid overselling by ensuring Shopify stock is regularly updated.
  • You use Sellsy to track stock adjustments, purchases or returns, and want those changes to appear in Shopify.
  • You have a defined Shopify location where online stock should be maintained.

How does it work?

E-commerce processing cycle between Sellsy and Shopify Plus

Streamline your e-commerce operations with an automated cycle that syncs Shopify Plus orders, invoices, inventory, credit notes, and more.

1 Effortless order syncing
New orders from Shopify Plus are instantly synced to Sellsy as invoices. Easily generate purchase orders, delivery notes, and import Shopify Plus credit notes directly into your Sellsy account.
2 Real-time inventory updates
Any changes made to product inventory in Sellsy are automatically reflected in Shopify Plus, ensuring accurate stock management and preventing overselling.

Unified Commerce Suite for Shopify Plus

E-commerce features

Unify Shopify Plus and Sellsy with real-time synchronization of orders, fulfillments, inventory, invoices, refunds and more.

Monitor transactions via an intuitive dashboard, access actionable analytics, and enable manual retries to streamline operations between Sellsy and Shopify Plus.

View all features

Multi-channel Integration Hub

Effortlessly connect Shopify Plus and Sellsy, streamlining your e-commerce ecosystem and business operations.

Unified Workflow Automation

Automate Shopify Plus order processing, inventory updates, and fulfillment with Sellsy, saving time and manual effort.

Real-Time Transaction Monitoring

Track and manage Sellsy transactions and data flows in real-time with advanced filtering tools, ensuring full visibility with Shopify Plus.

Analytics Dashboard

Gain actionable insights in Sellsy with comprehensive reporting and analytics, to optimize your Shopify Plus operations.

Flexible Settings

Tailor your e-commerce integrations with flexible settings and conditional filters on Shopify Plus transactions.

Custom API Integrations

Our development team has tackled diverse Sellsy scenarios and can implement your business logic quickly at no extra cost.

Related Shopify marketplace guides

Make sure this connector covers the post-purchase workflow

A connector page can show what systems can be linked. These guides help you check whether orders, tracking, invoices, refunds, and inventory states keep moving after launch.

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Shopify Marketplace Connect alternative

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Invoice and refund automation

See how invoice triggers, refund signals, cancellations, and credit workflows connect to real marketplace order states.

Observe Sellsy transfers in real-time. Start today.

Unlock the full power of our Shopify Plus integration and instantly view live changes to Sellsy orders, stock, fulfillments and customer data.

Eliminate manual Shopify Plus updates and focus on scaling your business with a unified, streamlined Sellsy workflow.

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