Simple API for Shipping Packages
https://www.postmaster.io/

Integrate, ship, track, validate and notify shipping packages. Features include: a) A RESTful API with client bindings in Python, PHP, Ruby, Java and .NET. One API gives you Fedex, UPS, and USPS; b) Track packages and notify your customers of shipment events like “out for delivery” and “delivered” by SMS, Email or use our webhook framework; and c) Make sure your addresses are going to the right place. Our API can give you insights like latitude/longitude, vacancy, and residential/commercial status. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This will be added to Entrepreneurial Resources Subject Tracer™.