FedEx Ground Economy formerly SmartPost (USPS last-mile delivery) is a special service. Your account needs to be authorized before you can use this service through their APIs.
What is it?
FedEx Ground Economy (formerly called FedEx SmartPost) is a cost-efficient shipping option for small and medium businesses. It’s ideal for outbound residential deliveries and returns that are low-weight, low-value, and nonurgent.
How do we get FedEx SmartPost LightWeight? This is 1-16 ounces shipments.
"smart_post_indicia": "PRESORTED_STANDARD", "smart_post_hub_id": "5465", "smart_post_endorsement": "ADDRESS_CORRECTION"