OnBuy + Sellsy
OnBuy + Sellsy integration
Connect OnBuy and Sellsy around the workflows your operation needs. Connect OnBuy and Sellsy with Synchron.io to automate supported workflows between the two systems. Direction, timing, and data coverage depend on the integration.
OnBuy is a UK marketplace built around a seller-first model, offering products across a wide range of retail categories without competing first-party stock. It is relevant to sellers looking for a broad UK ecommerce channel.
Available through Octopia
Looking for a specific OnBuy + Sellsy workflow? Tell us what should move between the systems and we will confirm the available configuration and any custom requirements.
Orders
Import or synchronize eligible orders between OnBuy and Sellsy where the integration supports it.
Refunds and credit notes
Keep supported refunds, cancellations, and credit workflows aligned between OnBuy and Sellsy.
Inventory
Keep inventory availability aligned between Sellsy and OnBuy where supported.
Fulfillment and tracking
Send supported fulfillment, carrier, and tracking updates between Sellsy and OnBuy.
Invoices and documents
Connect supported invoice and document workflows between OnBuy and Sellsy.
Custom workflow data
Use additional mappings or custom data in Sellsy workflows where the integration supports it.
Supported workflows for OnBuy and Sellsy
Connect operational workflows between OnBuy and Sellsy
Review the supported directions and data flows for orders, inventory, fulfillment, tracking, invoices, refunds, and other available workflows.
Grow your OnBuy marketplace sales 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.
How the workflow fits together
Marketplace order lifecycle between Sellsy and OnBuy
Connect OnBuy marketplace orders with the Sellsy workflows your team already uses for fulfillment, tracking, inventory, refunds, and other supported post-purchase operations.
- 1 Order import
- Import eligible OnBuy marketplace orders into Sellsy with the order, product, customer, and channel context needed for downstream processing, without re-entering them in OnBuy.
- 2 Fulfillment and tracking
- Fulfill orders in Sellsy and send supported shipment confirmations, carrier details, tracking numbers, and tracking URLs back to the OnBuy marketplace.
- 3 Inventory synchronization
- Use Sellsy as an inventory source and send supported availability updates to the OnBuy marketplace according to the workflow's configured rules.
Connect Sellsy to sync OnBuy data
Sync OnBuy with Sellsy in 3 simple steps
Start your OnBuy x Sellsy integration with Synchron.io in minutes. Our intuitive platform makes it easy to connect Sellsy and start syncing data to OnBuy, instantly.
- 01 Connect OnBuy in one click Authorize OnBuy with a single click to securely link your account.
OnBuy
Connected
- 02 Connect OnBuy to Sellsy Simply link Sellsy to your account and pair it with OnBuy.
OnBuy + Sellsy
New integration
- 03 Supported workflows for OnBuy and Sellsy Review the pair-specific directions and data types for this connection where supported.
Orders
Credit notes
Inventory
Tracking
Invoices
Integration planning
Plan your OnBuy + Sellsy workflow
Connect OnBuy and Sellsy around the operational data your team needs to move. Tell us the workflow, direction and fields you need. We will confirm the supported configuration and whether any custom work is required.
- Always-on workflow execution.
- Once active, supported workflows continue to run automatically according to their configured trigger or schedule for Sellsy.
- Scheduled and event-driven workflows.
- Automate supported order, fulfillment, and inventory workflows around OnBuy using the timing available for each connected platform.
- Monitoring and controlled recovery.
- Surface failed Sellsy transfers with the context needed to investigate the issue and recover supported workflows after correction.
- Secure API connections.
- Protect OnBuy integrations with encrypted connections and secure API or OAuth authentication where supported.
- Privacy-conscious data handling.
- Handle Sellsy operational data with access controls, masking, and privacy-focused practices designed for integration workflows.
- Integration support.
- Get help with OnBuy configuration, workflow questions, and scoped integration adjustments when your project needs them.
Related marketplace integration guides
Plan what happens after the marketplace order arrives
Compare order import, fulfillment and tracking, inventory, invoice and refund workflows before choosing how the marketplace should connect to your existing systems.
Shopify marketplace order synchronization
See how marketplace orders are imported into Shopify with the context and routing information teams need to process them.
Marketplace seller operations
See how Synchron helps sellers automate orders, fulfillment, inventory, invoices, refunds, and monitoring across connected systems.
Invoice and refund automation
See how invoice, cancellation, refund, and credit workflows stay aligned with the marketplace order lifecycle.
Keep Sellsy operations connected. Start with the workflows you need.
Connect OnBuy and Sellsy with automated workflows for orders, fulfillment, inventory, customer data, and other supported operations.
Reduce manual OnBuy updates and keep Sellsy workflows visible, connected, and easier to manage.
