How to Blacklist Shipping Methods

You can elect to blacklist specific shipping methods to they are excluded when our system rate-shops shipping options for your orders.  When a method is blacklisted, the system will automatically select the least-cost option that is not blacklisted. 

This is useful when you want to prevent certain carriers or services from being used entirely. 

How Blacklisting Works 

• Blacklisting removes a shipping method from consideration during rate shopping. 
• If multiple methods are available, the system will choose the lowest-cost eligible option that is not blacklisted. 
• Blacklisting can be applied at either the carrier level or the service level. 

Steps to Blacklist Shipping Methods 

1. Click the gear icon in the upper-right corner of the app. 

2. Select Shipping Methods from the dropdown menu. 

3. Scroll down to Blacklisted Carrier & Service Levels.

4. Make your selections using the checkboxes: 

• Carriers
  • Checking a box here will blacklist all services offered by that carrier.
• Services
  • Checking a box here will blacklist only the specific service selected (e.g., USPS First Class, UPS, Ground). 

5. Click Save to apply your changes. 

⚠️ Important Disclaimer: Blacklisting & Label Purchase Attempts

Blacklisting cannot be used to try to force a label purchase. 

Please note: 

• Checking or unchecking backlist boxes does not trigger a label purchase. 
• Blacklisting only controls which methods are eligible once the system attempts to buy a label. 

Common Scenario We See

Clients Often: 

• Check a box to blacklist a method
• Immediately uncheck it
• Expect that action to push the label through 

This will not work. 

Correct Process (Example: USPS + PO Boxes) 

If a label fails due to a carrier constraint *Such as USPS delivery to a PO Box): 

1. Leave the shipping method enabled
2. Allow the team/system to attempt the label purchase
3. Once the attempts fails and the issue is identified: 
   • Adjust blacklist settings only if needed
   • Then reattempt the label purchase

Turing blacklist options on and off before a label attempt will not resolve carrier restrictions and can delay fulfillment. 

Best Practices

• Use blacklisting as a preventative control, not as a troubleshooting shortcut. 
• Always allow the system or team to attempt the label purchase first. 
• If a shipment continues to fail, contact the team so the root cause (carrier rules, address type, service availability) can be addressed properly.