title: How to send bulk sms on whatsapp
body: <p>I want to send bulk SMS on WhatsApp without creating broadcast list.</p>
  
  <p>For that reason, I found <strong>pywhatsapp</strong> package in python but it requires WhatsApp client registration through <strong>yowsup-cli</strong>.</p>
  
  <p>So I've run <strong><code>yowsup-cli registration -r sms -C 00 -p 000000000000</code></strong> which resulted in the error below:</p>
  
  <blockquote>
    <p>INFO:yowsup.common.http.warequest:{"status":"fail","reason":"old_version"}</p>
    
    <p>status: fail reason: old_version</p>
  </blockquote>
  
  <p>What did I do wrong and how can I resolve this?</p>