The Txtwire Webservice API is the SOAP/ WSDL/XML version of the Txtwire API. The platform enables a developer to create and manage branch divisions and subscription groups. The subscribers within these groups correspond to the person that will be receiving an SMS message. These groups can be accessed over HTTP via the Webservice API in order to send bulk quantities of SMS messages. In addition to the Webservice API, the Txtwire hosted platform allows message campaigns to be scheduled, along with additional management features not accessible via the API. Txtwire also offers a REST API that offers documentation on voice and audio functions in addition to SMS.