Messages v2.1

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 formats. All of your Flowroute phone numbers are MMS-enabled. MMS total size limit is currently 750kB.

Authentication

Messages v2.1 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.

Versioning

Messages v2.1 is versioned according to Flowroute's philosophy on resource-level breaking changes.

Supported Content Types

While both the destination mobile operator and device ultimately determine compatibility, most mobile operators and handsets render the MMS file types specified below:

Application Image Video Audio Text
PDF JPEG 3GP (also P2 and Timed Text) AMR (also AMR-NB) Plain
ZIP GIF MP4 MIDI vcard
BMP AVI WAV directory
PNG MPG AC3 CSV
H.261 MP3 (MPEGs are converted to this format) RTF
H.263 (also 1998 and 2000) Basic Calendar
H.264 RealAudio
WebM L24
QuickTime Ogg
Microsoft's Advanced Systems Format (x-ms-wma) Vorbis
MP4
WebM
3GPP (also 3GPP2)

Base URL

https://api.flowroute.com/v2.1