The Sellsy integration turns completed orders from configured myFulfillment stores into validated sales invoices. The connector prepares the customer data, line items, tax, and payment. The invoice number and PDF link are returned to the order, so the team can retrieve the document without leaving the source order.
Sales invoicing
SellsyCompleted order
#CMD-4821
FV-2026-0184
Emma Martin
VAT 20% · Card payment
Total incl. VAT
€148.80
Sellsy is a French business-management suite covering CRM, invoicing, and payments. myFulfillment remains the operational system for orders and inventory. Its Sellsy connector steps in after fulfillment: it selects completed orders from configured stores, requires a tracking number unless an explicit override is enabled, then creates the customer, invoice, and payment in Sellsy. Separate feeds also cover products and inventory. The flows run from myFulfillment to Sellsy, while the invoice identifier, number, and PDF link are attached to the source order.
Completed orders from configured stores, with a tracking number unless the settings allow otherwise.
Controls the export and prepares customer data, line items, VAT and payments for Sellsy.
Sales invoices and payments created in Sellsy.
myFulfillment manages order processing and inventory. Sellsy receives the customer, sales invoice, and payment; the invoice number and PDF link are attached to the order.
The Sellsy feed selects completed orders from configured stores. A tracking number is required unless the configuration's explicit override is enabled.
Configured stores · completed order · tracking required unless overridden
See the featuremyFulfillment creates and validates the Sellsy sales invoice. The invoice identifier, number, and PDF link are attached to the source order.
Invoice to Sellsy · number and PDF link back to myFulfillment
See the featureBefore invoicing, the connector looks up the Sellsy customer, then creates or reuses the required company, contact, and address records.
Lookup before creation · company, contact, and addresses
See the featureEach invoice line carries the amount, quantity, and tax rate from the order. Tax mappings must be validated in the Sellsy configuration.
Tax rate carried on each invoice line
See the featureAfter the invoice is validated, the connector creates the Sellsy payment with the configured method and links it to that invoice.
Payment created and linked to the Sellsy invoice
See the featureThe inventory feed sends the available quantity each day to the Sellsy warehouse selected in the configuration.
Daily inventory to the selected Sellsy warehouse
See the feature| Data | When |
|---|---|
| Out | |
| Completed tracked order from a configured store | hourly |
| Company, contact, and addresses | before invoicing |
| Lines, quantities, amounts, and tax rates | when the invoice is created |
| Payment linked to the invoice | after invoice validation |
| Products: SKU, name, price, cost, and barcode | every 4 hours |
| Inventory to the selected Sellsy warehouse | daily |
| In | |
| Sellsy invoice identifier, number, and PDF link | after a successful export |
This integration fits when myFulfillment manages order processing and Sellsy handles customer invoicing. Its value comes from a controlled handoff limited to configured stores, with the invoice accessible from the source order.
| Solution | Order selection | Sellsy customer | Sales invoice | Payment | Return to the order |
|---|---|---|---|---|---|
Sellsy with myFulfillmentRecommended | Supportedconfigured stores, completed order, and tracking required | Supportedlooked up, created, or reused | Supportedcreated and validated in Sellsy | Supportedcreated and linked to the invoice | Supportedidentifier, number, and PDF link |
File export | Partially supportedFiltering when the file is prepared | Partially supportedDepends on exported columns | Partially supportedFile to import | Partially supportedDepends on the format | Partially supportedSeparate receipt |
Separate entry | Partially supportedOrder-by-order review | Partially supportedManual lookup and entry | Partially supportedInvoice recreated manually | Partially supportedManual matching | Not supportedautomatic link |
Comparison based on the official documentation and myFulfillment docs. The limit is stated under the "Partial" badge; no rating, no sponsored placement.
See how the Sellsy integration fits into your operations
The connector is designed for teams that fulfill orders in myFulfillment and invoice their sales in Sellsy. The expected result is concrete: an eligible order should produce an identifiable invoice that remains accessible from the source order.
Only stores enabled in the configuration feed Sellsy. An order must be completed and have a tracking number unless the override has deliberately been enabled.
The connector first looks for the Sellsy customer. It reuses or creates the company, contact, and addresses, then builds the lines with their tax rates.
After creation and validation, myFulfillment stores the Sellsy identifier and invoice number, plus the link to its PDF.
The connector exports completed orders from configured stores to Sellsy. A tracking number is required unless the explicit override is enabled. It creates or reuses customers, creates and validates invoices, adds payments, exports products and inventory, then attaches the invoice identifier, number, and PDF link to the order.
Open the Sellsy integration in myFulfillment and authorize access to your Sellsy account through OAuth. Back in the configuration, select stores, tax and payment mappings, and the Sellsy warehouse that should receive inventory.
The feed selects completed orders from stores enabled in the configuration. They must have a tracking number unless the corresponding override is explicitly enabled.
Before invoicing, the connector looks for an existing customer. It then reuses or creates the required company, contact, and addresses and attaches that customer to the invoice.
Each line carries the SKU, quantity, amount, and tax rate from the order. The invoice is then created and validated in Sellsy. Test the tax mappings before enabling the feed.
Yes. After the invoice is validated, the connector creates the payment with the configured method and links it to that invoice.
After a successful export, myFulfillment attaches the Sellsy invoice identifier and number, plus the link to its PDF, to the source order.
Yes. The product feed creates or updates SKU, name, price, cost, and barcode data every 4 hours. Available inventory is sent daily to the Sellsy warehouse selected in the configuration.
The flow runs from myFulfillment to Sellsy for customers, invoices, payments, products, and inventory. Only the invoice identifier, number, and PDF link are attached to the order.
Orders are exported hourly, products every 4 hours, and inventory daily.
Sellsy receives your sales data. Explore the other tools connected to your operations.
Sellsy integration: from completed orders to sales invoices
See it in your own setup
