Integration With Mondial Relay

ReturnGO integrates with Mondial Relay to help you manage your return shipping in Europe. Mondial Relay is a leading eCommerce distribution company in France and Europe, offering an extensive range of shipping carriers.


The ReturnGO-Mondial Relay integration supports:

  • Domestic pay-on-scan return labels
  • Live return tracking updates
  • QR codes
Return Labels Return Tracking QR Codes Auto Select Cheapest International Shipping

See a full feature comparison with other shipping carriers.


To integrate your Mondial Relay account into ReturnGO you will need the following information:

  • Dual Carrier API Username (your Mondial Relay account email)
  • Dual Carrier API Password
  • Dual Carrier Customer ID
  • WebService API Brand ID
  • WebService API Private Key

Linking Your Mondial Relay Account to ReturnGO 

To link your Mondial Relay account to ReturnGO: 

  1. Go to Integration > Products & Services
  3. Choose Mondial Relay from the drop-down list. 
  4. Click on the green check mark.

Shipping integration steps-png

5. Enter your credentials. 
6. Click CONNECT. 

Adding the Integration to a Return Method

Once you've connected the integration, you'll need to add it to a return method:

  1. Go to Return Methods
  3. Click ADD RETURN METHOD or select a return method to edit.

Shipping integrations steps 1-png-1

4. Go to the Shipping Label Settings section. 
5. Set Connection to Mondial Relay
6. Select a carrier/service level.

7. Verify your return address and shipping instructions. 
8. Click on the save icon. 

Return method settings-png-3

Troubleshooting the Integration 

Many of the issues encountered related to integration can be identified during setup or label generation. 

Here are a few things you can check to try and fix such issues: 

Setup Issues 

Make sure your API credentials are accurate. 

  • There should be no extra spaces before or after each API entry. 
  • Make sure you are using live or production API credentials, and not dev or test APIs. 
  • Try to re-generate a new API key and reconnect. 
  • If a carrier or service level is not available, contact your shipping service support team to verify which return services are available. 
  • Note: Some carriers support forward deliveries only, returns only, or both.

Label Creation Issues 

Verify your Return Address.

  • Some carriers may not recognize special characters, which might cause issues when generating labels.
  • Remove special characters and unnecessary spaces in your return address.
  • For example: 
    • If your store name is “John & Jane Store”, change it to “John and Jane Store”. 
    • If your store phone number has “+” signs or “( )”, remove them. 

Verify the Customer’s Address.

 ReturnGO collects the customer’s address when the request is submitted.

  • If there are corrections to the customer’s address, reject and resubmit the return request. 

Verify the Item Weight. 

  • If the total weight of the items being returned exceeds the service level’s weight limit, then the carrier will reject the label request. 

Verify if you can Generate a Return Label for the Order Directly in the Shipping Platform. 

  • If your shipping service platform cannot generate the label, then it will also fail in ReturnGO. 

Mondial Relay-Related Issues 

For Mondial Relay-related issues, please contact Mondial Relay support.

For any other issues, feel free to contact ReturnGO support through chat or email.