The ElasticEmail Java Sample Code by ElasticEmail presents how to implement email marketing into applications by interacting with the interface. The API is available in REST architecture with HTTP and JSON formats.
DE-DE Group’s Birdseye Mail might be the first email client built purely for a tablet environment. Now, the Birdseye Mail API allows developers to integrate Birdseye Mail functionality with third party applications. App developers can take advantage of tablet-specific functionality and add rich email functionality to new and existing apps.
Google Contacts API gives client applications access to a user’s contacts list where the application can create new contacts, update or delete existing ones, or query for contacts that match particular criteria. This tutorial explains how to implement the API in C# and ASP.NET with OAuth 2.0.