The MailChimp Node.js sample code by Pete Holiday explains with an application the way to interact with the official wrapper. It allows developers to set up a common environment for integration, make API calls, and display the results. Node.js wrapper available at https://www.npmjs.com/package/mailchimp-api
DokDok, a Montreal-based startup, has had an email attachment management application on Google Apps some time. To make this work, it made an API to use internally that intelligently uses email accounts as if they were datastores. Recently, the company announced that this API would be renamed Context.IO and available to all.
It is not uncommon for e-shoppers to create a cart on a website without the intention of making an immediate purchase. The motives behind abandoning a cart can vary; what matters is how companies take advantage of the information that can be gained with each cart that is left behind. Rejoiner is a company that helps online retailers capture, analyze and recover abandoned shopping carts. The company accomplishes this with their Rejoiner API.