This SDK is an open source PHP client for MessageBird's REST API. The API uses HTTP verbs and a RESTful endpoint structure with an access key that is used as the API Authorization. Request and response payloads are formatted as JSON using UTF-8 encoding and URL encoded values. MessageBird is a software telecom service for SMS, Chat and Voice API's that connect you to 7 billion phones globally.
Google has apparently backtracked on the idea of allowing third-party messaging apps to access RCS on Android phones. Though RCS is a public specification, APIs are needed to connect messaging apps to the RCS protocols employed by wireless network operators. No API means no RCS for outside apps.
Urban Airship, the global leader in Mobile Relationship Management, today announced its full-platform capabilities with native support for Amazon Device Messaging will soon be available for apps developed for Fire Phone and Kindle Fire. Fire can leverage Urban Airship’s real-time mobile marketing automation capabilities with highly targeted push messaging and rich in-app content to drive up to four times greater response from users on average than mass, shotgun-style messages.