ShippingEasy consists of a cloud-based platform that allows online merchants to manage the processing and tracking of orders from a single interface. Merchants can integrate shipping information from multiple sites (e.g. eBay, personal site, physical warehouse, etc.) with the same interface and shop rates across various carrier lines. In addition to over ten existing integrations with e-commerce sites (e.g. Magento, eBay, Shopify, etc.), ShippingEasy offers a custom API that allows developers to incorporate the ShippingEasy platform into third party apps and sites.
Adding shipping and posting functionalities to your applications may be necessary for your what you're trying to achieve, but it may not always be a quick and easy process. EasyPost is a posting and shipping service specifically designed for applications, saving developers some very valuable development time. The EasyPost API makes it possible for developers to access this functionality and easily integrate it with other applications.