The USPS Express Mail Service Commitments API allows developers to get delivery commitments for Express Mail packages. Users must provide the origin and destination ZIP codes and, optionally, the current or future date on which the package will be shipped. The API returns all Express Mail Service Commitments for the given locations, including package drop-off information.
This API is part of the USPS Web Tools API library which provides access to USPS data free of charge.
The following is a list of how-to and tutorial content that matched your search term. ProgrammableWeb's how-to content comes from two sources; full-blown tutorials that we publish ourselves and other highly relevant tutorials that we find elsewhere on the Web. This list represents on combination of both tutorial types and if you go to ProgrammableWeb's API University, you'll not only be able to find more, they are organized based on your role (API providers or developers who consumes APIs). If you know of a tutorial that would be of interest to the ProgrammableWeb community, we'd like to know about it. Be sure to check our guidelines for making contributions to ProgrammableWeb.