The MyNewsletterBuilder PHP SDK by MyNewsletterBuilder wraps the API to access email marketing capabilities that can be used for newsletter features. It is available for download from the main site and it requires PHP 5+ to interact with the code.
Whispir, a platform that enables its users to send messages to various channels at the same time, provides the Whispir API designed to allow developers to embed any feature of the platform into any cloud-based web application. Users can send these high-volume messages that are tailored and targeted for each channel and recipient via SMS, voice, email, web, mobile, or social media.
People and organizations start using Twitter today for general public announcements or as a primary communication channel in closed communities. For example, I use Twitter when I want to share a story with my students or announce a newly available studying material. But what do you do if there are some people who do not want to use Twitter and still rely on email communication? By using Twitter API and Google AppsScript you can write and run a simple mashup that sends an email anytime you post a new message on Twitter.