Add USPS (Stamps.com Account) to The Hub
This article assumes that you are on a ShipWorks plan that offers access to The Hub. If you are on a legacy plan that does not offer access to The Hub or if you are unsure please add your carriers in the software.
LATEST VERSION OF SHIPWORKS
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Open a web browser and go to hub.shipworks.com.
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Log in using your ShipWorks account email and password. (This is the same email address and password that you created when setting up your ShipWorks account.)
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Click Settings.
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Click the Connect a Carrier button.
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Click the United States Postal Service by Stamps.com button to launch the setup wizard.
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Select Create a new Stamps.com account for use with ShipWorks. Then, click the Next button.
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Complete all information on the screen, accept the Terms and Conditions, then click the Next button. (All fields are required.)
What Label Format should I select?
If you are uncertain of what label format you should select here is a little information to help you:
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Standard - Select this option if you will be printing shipping labels to a laser or inkjet printer.
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Thermal-EPL - If you have an older thermal printer, such as a Zebra 2844, select this option.
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Thermal-ZPL - Select this option if you have a newer thermal label printer. Almost all thermal label printers produced in the last several years support this option.
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Enter the credit card information for the card you wish to place on file with Stamps.com. This credit card will be used to purchase postage. (All fields are required.) Then, click the Next button.
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Complete the Stamps.com Credentials and Stamps.com Security Questions. Then, click Next.
Log in to your Stamps.com account.
Did you know that the Username, Password, and security questions you create can also be used to log into your new Stamps.com account? Once your account has been created, visit Stamps.com and sign in to manage your new account.
Your new Stamps.com account will now be created. It may take a few moments.
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Add funds to your Stamps.com account by clicking on the Buy Postage... button. Funds can be added in $10.00 increments.
Funding Your Stamps.com Account
Did you know that adding funds to your Stamps.com account allows you to create and pay for shipping labels? With Stamps.com, you add money to your account and the labels you create are paid for from those funds. Think of it as a wallet that holds your funds until you are ready to purchase postage.
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Click the Finish button. Your new account will be displayed in the Carriers section of The Hub.
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Click Settings.
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Click the Connect a Carrier button.
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Click the United States Postal Service by Stamps.com button to launch the setup wizard.
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Select the Use an existing Stamps.com account option.
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Enter your existing Stamps.com account Username and Password.
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Select the correct Requested Label Format for the type of printer to which your labels will be printed.
What Label Format should I select?
If you are uncertain of what label format you should select here is a little information to help you:
-
Standard - Select this option if you will be printing shipping labels to a laser or inkjet printer.
-
Thermal-EPL - If you have an older thermal printer, such as a Zebra 2844, select this option.
-
Thermal-ZPL - Select this option if you have a newer thermal label printer. Almost all thermal label printers produced in the last several years support this option.
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Click the Next button. (It may take a moment for your Stamps.com account to be added.)
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Verify that your Stamps.com account and current balance are displayed in the Carriers section.
After adding your carrier account in The Hub, please log into the ShipWorks software and verify your carrier settings are configured for your specific shipping workflow.
Once you have connected your Stamps.com account, you can enable One Balance in Shipworks.
To comply with updated USPS address validation requirements, all shipping label requests now require complete From and Return To addresses. Both addresses must include Street Address, City, State, and ZIP Code. Passing only a ZIP Code will result in a validation error.
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For UI / Dashboard Users: Ensure your saved shipping origin and return addresses in your account settings include full street details.
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For API Users: Ensure both the
fromandreturn_toaddress objects in your request payload contain complete street, city, state, and postal code fields.
Identify your integration method below and follow the corresponding solution:
|
Scenario |
Cause |
Solution |
|---|---|---|
|
Using the Web/UI Portal |
Your shipping origin or return address is incomplete or differs from your primary account settings. |
Go to your Account Settings and update your primary shipping and return addresses to include complete, permanent street details. |
|
Using Direct API / SWSIM Integration |
Your current API payload passes only a ZIP code instead of full address objects. |
Update your integration payload to include complete From and Return To address objects (including Street Address, City, State, and ZIP) when requesting a label. |
Still Need Help?
Please feel free to reach out to one of our awesome Technical Support Representatives in St. Louis. We are happy to help.
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