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The following shipping methods are supported by the API where a “shipping_method” parameter is used. Some services may not be available on your account or in your area but all services are listed for completeness.

FedEx Services

UPS Services

USPS Methods

Amazon Merchant Fulfillment

OnTrac Services

LaserShip Services

GLS Services

”Cheapest” Methods

Other

The External Shipping Methods are user defined whithin ShipStream. This list is not exhaustive, but instead exemplifies how all External Shipping Method codes are prefixed with external_ . For External Shipping Method codes used by your 3PL please contact your represintative.