Connect Your Carrier Accounts

Explains how to connect one of your existing carrier accounts to ShipStation.

To start creating labels in ShipStation, you must first connect at least one postage provider account. 

You can connect any provider that integrates with ShipStation to start creating labels using your preferred services. To see a comprehensive list of ShipStation's carrier integrations, review our Carrier Integrations help article.

Connect Your Carrier Account

  1. Select the provider you'd like to add from the list.

  2. Fill in all the requested information, then click Connect.

Post-billed or Balance-based Providers

The postage accounts you use to create labels in ShipStation will either be post-billed or balance-based accounts. The difference is how they charge you for the labels you create in ShipStation.

Post-Billed Providers

Most postage provider and carrier integrations are considered Post-billed. That means your provider sends an invoice each month and bills your account for all labels used in your invoice period. With post-billed providers, you are only charged for the labels you actually use. Any labels you create but do not use to ship a parcel will not be invoiced.

FedEx and UPS are common examples of post-billed providers. All billing for labels from post-billed providers is managed by the carrier and not by ShipStation. For billing issues with these providers, you must contact your provider directly.

Balance-Based Providers

Balanced-based providers charge you for your labels the moment you create them and require you maintain a balance to purchase your labels. If your balance is lower than the amount required to purchase a label or batch of labels, you must add funds to your balance before you can create them.

Your ShipStation Balance pays for labels you create using ShipStation Carriers. Manage your balance directly in ShipStation in the Payments & Subscription settings.

To add funds to your ShipStation Balance:

  1. Click the Add Funds link for ShipStation Balance.

  2. Choose the amount you wish to add to your balance and save.


You can now purchase labels with any service from ShipStation Carriers.

Set Your Account to Auto-Fund!

You can set ShipStation to automatically refill your balance when it crosses a certain threshold. Review our Add Funds to your ShipStation Balance help article for details.

Multiple Accounts per Carrier

You can add multiple accounts for the same carrier by repeating the provider connection process. We highly recommend giving each account a unique nickname so you can differentiate them in the Services selection menu.

Not Available for All Carriers

Not all carriers allow multiple accounts in ShipStation. Please review our Carrier Integration Guide to see if your carrier supports this feature.

ShipStation always defaults to the Primary account for a carrier when you select a carrier service for a shipment.

To select an account other than the Primary before creating a label, change the account using the Shipping Account drop-down in the Other Shipping Options section of either the Shipping Sidebar in the Orders grid or of the Order Details Screen.

Other Shipping Options section with Shipping Account drop-down menu displaying two DHL accounts.

To select a different account for multiple orders, you can apply it in bulk or create an Automation Rule to apply an account to specific orders as they import.

Primary Account Notes

Certain ShipStation features only allow the carrier's Primary account.

For example, Return Labels and labels created directly in the Rate Calculator will always use the Primary account.

Shipping Presets do not provide the option to change the carrier account within the preset. However, you can still manually change the account on an order before creating the label.

Notes About Connecting Your Own Carrier Accounts

  • If you use a provider that does not appear in our list of available providers, we may not yet integrate with them. If this is the case, we recommend contacting your provider directly to express your desire to connect your account to ShipStation. They can then contact our integration team so we can work together to build the integration.

  • Different providers require different information, and in some cases, you may need to log in to your provider account directly to locate it. For details on specific provider needs and connection processes, review the article for your postage provider in our Integrations Help guide.

  • When connecting multiple accounts for a single carrier, the first account you connect will be considered your primary account, which means it is the account automatically selected when you set that service from that carrier. (Multiple accounts not supported for all carriers.)

    To set a different account as the primary account, open the carrier's Settings in ShipStation and check the box for Make this my primary account.

  • To bill the cost of a label to a third-party carrier account, you must first add your own account with the carrier to ShipStation. This allows you to configure the shipment with the correct carrier service.