The Messaging API v2.1 which is currently in beta allows you to send and receive multimedia messages (MMS) on longcode and toll-free numbers. This version supports compact and JSON API. All of your Flowroute phone numbers are MMS-enabled. MMS total size limit is currently 750kB.
Messages v2.1 (Beta) supports HTTP Basic Auth. Use your API credentials from Flowroute Manage to authenticate: Access Key serves as your username while Secret Key serves as your password.
Messages v2.1 (Beta) is versioned according to Flowroute's philosophy on resource-level breaking changes.
While both the destination mobile operator and device ultimately determine compatibility, most mobile operators and handsets render the MMS file types specified below: