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 API request 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.
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.