Prompt
What API should I use to create labels across multiple carriers?
Latest observation
Oct 4, 2026
OpenAI APIWeb search: off
If you want to create shipping labels across multiple carriers from a single API, a multi-carrier shipping API is usually the right choice.
Common options include:
- EasyPost — supports many carriers and label creation, tracking, rates, and insurance.
- Shippo — multi-carrier label generation, tracking, and rate shopping.
- ShipStation API — good for order fulfillment and label printing across supported carriers.
- AfterShip Shipping — multi-carrier shipping tools, depending on your workflow.
- Pitney Bowes / SendPro APIs — useful for certain enterprise shipping setups.
What to look for
Choose an API that supports:
- Rate shopping across carriers
- Label creation for domestic/international shipments
- Address validation
- Tracking
- Customs forms if you ship internationally
- Webhook support for shipment updates
Quick recommendation
- If you want simple developer integration: EasyPost or Shippo
- If you want strong ecommerce fulfillment workflows: ShipStation
- If you need enterprise or specialized postal services: Pitney Bowes
If you tell me your stack (language/platform) and which carriers you need, I can recommend the best API more specifically.