user6583: How do I send SMS from an Ethernet shield via SMS Gateway?
The site Clickatell provides free SMS.
Does anyone know how to do this or is there some other way to do it?

user17069: Open an account and try to implement their API using something like Chrome REST client. Then do the same through the ESP8266. I would personally relay it through my own web service/ url. You could also take a look at: http://www.instructables.com/id/Send-SMS-from-Arduino-over-the-Internet-using-ENC2/

user3638: First contact Clickatel's support and ask them how to use their API, make yourself familiar with it.
Then when you know that you connect your Arduino to your ethernet shield, I'm just gonna assume you got Arduino's original shield, because you want to support the arduino foundation.
http://arduino.cc/en/Main/ArduinoBoardEthernet if you have the standalone board.
http://arduino.cc/en/Main/ArduinoBoardEthernet if you have the shield board.

6583: <p>How do I send SMS from an Ethernet shield via SMS Gateway?</p>

<p>The site <a href="https://www.clickatell.com/" rel="nofollow noreferrer">Clickatell</a> provides free SMS.</p>

<p>Does anyone know how to do this or is there some other way to do it?</p>
 17069: <p>Open an account and try to implement their API using something like Chrome REST client. Then do the same through the ESP8266. I would personally relay it through my own web service/ url. You could also take a look at: <a href="http://www.instructables.com/id/Send-SMS-from-Arduino-over-the-Internet-using-ENC2/" rel="nofollow">http://www.instructables.com/id/Send-SMS-from-Arduino-over-the-Internet-using-ENC2/</a></p>
 3638: <p>First contact Clickatel's support and ask them how to use their API, make yourself familiar with it.</p>

<p>Then when you know that you connect your Arduino to your ethernet shield, I'm just gonna assume you got Arduino's original shield, because you want to support the arduino foundation.</p>

<p><a href="http://arduino.cc/en/Main/ArduinoBoardEthernet" rel="nofollow noreferrer">http://arduino.cc/en/Main/ArduinoBoardEthernet</a> if you have the standalone board.
<a href="http://arduino.cc/en/Main/ArduinoBoardEthernet" rel="nofollow noreferrer">http://arduino.cc/en/Main/ArduinoBoardEthernet</a> if you have the shield board.</p>
