A system comprising a computer-readable storage medium storing at least one program and a computer-implemented method that enables short message service (SMS) text messaging to be integrated into existing applications is presented. Consistent with some embodiments, the method may include receiving a request from a client application to transmit a message to a recipient device. The method may further include adding the message transmission request to an outbound queue based on determining the message transmission request is valid. In response to successfully validating the request, the method causes transmission of the message to the recipient device.