This is the iOS SDK for Sailthru that allows developers to access and integrate the functionality of Sailthru with iOS applications and devices. Sailthru is an email and messaging marketing platform that allows companies to engage with their customers through predictive personalization.
As a developer, you can figure out how to make your program connect to Facebook, Twitter, SMS, and Email. Or you can use the Embarke API and connect just to Embarke, a messaging platform that connects you to them all. You can skip learning the specifics of how to connect to each of them. The REST API's website has a five minute tutorial video on how to use this gateway to its developer tools for social communications.