Get started using Ubivox with these examples that use the xmlrpc NPM package. These samples demonstrate Creating a new subscription, Updating subscriber data, Unsubscribing and more. The API provides a way to design, write and edit your newsletters in a simple and easy manner with a drag and drop system. The editing tool makes is a simple way to build and write newsletters. Ubivox is a simple and secure newsletter service, that allows you to avoid bounces, servers, subscription handling and more.
Online bookseller Erapublications has an API for its in2Era web service for selling ebooks through online distributors. According to its documentation, this RESTful API, which requires an authentication key, integrates its catalog onto your site. Distributors get a cut of the sales.