* Provide sample code, reusable libraries and tips for using the Esendex APIs within your applications. * Support many programming languages. * Easy to use.

* Bi-Directional Unicode - Messages are formatted to support non-English language and characters. * Message queuing - Logic to handle concurrent message requests. * SMS concatenation - Receive and send long, multi-part messages in the right order. * Global reach - One API that reaches nearly every country. * Picture messages - Send and receive pictures in the US and Canada. * Two-way API - Respond with TwiML and send with REST API. * Short Codes - 30 messages per second for time-sensitive SMS apps. * Track every message - Confirm message delivery with real-time status. * Set Maximum Price - Avoid expensive messages by creating a price limit.