Flocknote enables users to create and send simple email newsletters and text messages to groups of people. It was designed primarily for churches, ministries, and other such organizations. Flocknote handles all of the subscribing, unsubscribing, open-rate tracking, bounces, and related issues.
Recipients can choose to receive messages by email, text message, or both. If some group members don't do email or texting, Flocknote can call them on the phone or reach them via Facebook, Twitter, or RSS instead. The Flocknote API makes this service's functions accessible to other sites and services via REST calls.