The Messaging API v2.1 allows you to send and receive SMS (text messages) and MMS (multimedia messages) on long code and toll-free numbers. This version supports compact and JSON APIrequest formats. All of your Flowroute phone numbers are MMS-enabled. Maximum message size for outbound MMS (or mobile-terminated messages) is currently 750kB.
Messages v2.1 utilizes 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 is versioned according to Flowroute's philosophy on resource-level breaking changes.
Supported Content Types for MMS
While both the destination mobile operator and device ultimately determine compatibility, most mobile operators and handsets render the MMS file types specified below:
Flowroute sends the message attachments as they are received from a mobile operator. Most operators have a maximum message size of 1.5MB, but can send payloads up to 15MB.