The Mozilla Mobile Messaging (WebSMS) API simplifies the integration of tools that implement messaging concepts in web content. Once integrated in applications, the API facilitates the exploitation of create, send, and receive message properties in web content in addition to manipulating the SMS and the MMS functionalities. The API’s mobile browser support is currently restricted to Firefox Mobile (Gecko) and Firefox OS. The Mozilla Mobile Messaging API does not conform to W3C standards. This feature is not part of any specification.