GSO was acquired by GLS (General Logistics Systems) in 2016, making GSO a wholly owned subsidiary of GLS. Their service areas include Washington, Oregon, Idaho, Nevada, California, Utah, New Mexico, and Arizona. GSO offers ground and priority service levels. GLS is known for their expansive next-day delivery, priority overnight services at 40% less cost, per-pallet rates for LTL shipments, and later-than-average pickup and earlier-than-expected delivery times. They practice a green initiative and value community involvement.
Using EasyPost’s simple Shipping API, you can ship with GSO and dozens of others with a single point of integration.
The EasyPost Shipping API boasts a full suite of features to make shipping easy. With our Shipping API, you can:
Take a look at our public documentation and start building with one of our helper libraries (Python, PHP, Ruby, Node.js, Java, and more). Avoid month-long integrations and start shipping in minutes with EasyPost.
Track packages across all major carriers.
Validate domestic and international addresses.
Learn how to handle international shipping seamlessly.
Shipping insurance for all items sent with EasyPost.
QALO uses EasyPost to automate their returns for an unbeatable customer experience.
With EasyPost's API, Expedited Passports & Visas cut their operational load in half.
Casper sped up their European launch thanks to EasyPost's support of over 30+ European carriers.
Sign up and start shipping in the same day. We have our GSO API live and ready for you to test with. We also have extensive client documentation in over seven different languages to help you get started. If you have any questions, or if you want to talk logistics, feel free to reach out to one of our shipping experts.