Followzup is a free service for sending encrypted text messages to mobile phones and other mobile devices.
Messages are sent in background, from systems and websites with the help of APIs, currently available in PHP and Java.
The APIs are simple to use, and with only 1 command line the application can send a message to the cell phone of one or more users.
In addition to submitting messages, Internet websites may also receive messages from users, originating from their mobile devices.
Communications performed between systems and mobile devices through Followzup are encrypted with the AES and RSA standards, and the open protocol of the service allows the development of APIs for other languages, as well as the development of APPs for different models of mobile devices.