Does WhatsApp offer an open API?
<p>I wonder if there is an open API to access WhatsApp through an internet protocol?
The concrete question is:</p>

<ol>
<li>Is there a way to send a message to a list of WhatsApp users from an internet server? </li>
<li>Is there any open concept for authentication? </li>
<li>Or - is WhatsApp at the end a closed system without any open API through an internet protocol?</li>
</ol>