The Bulk SMS Gateway API allows developers to integrate bulk SMS services into their applications and portals. This API is suited for sending both promotional and transactional SMS to clients. API documentation is not publicly available.
This service is provided by KAPSYSTEM, a company in India that provides bulk SMS and messaging solutions.
It's not unusual to see applications with custom messaging services, and developers who create applications have a vast amount of choices for delivering messaging technology. In order to integrate with these services, developers need APIs. Here are 10 favorites, according to ProgramambleWeb.