title: Outlook Javascript Add-In: "ItemSend" Event doest trigger on outlook for windows, why?
body: <p>I created an outlook plugin that i'm testing on local enviroment.
  the plugin is working when user is composing new message.
  I have a function that is supposed to be triggered on item send.</p>
  
  <p>The thing is that the event us not triggering only for outlook on windows:</p>
  
  <ol>
  <li>"outlook for the web" - <strong>Works fine!</strong></li>
  <li>Outlook for mac - <strong>Works fine!</strong></li>
  <li>Outlook for windows - <strong>doesnt work!!</strong> (event doesnt trigger)</li>
  </ol>
  
  <p>Heres my xml event:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;ExtensionPoint xsi:type="Events"&gt;
      &lt;Event Type="ItemSend" FunctionExecution="synchronous" FunctionName="checkBodyOnlyOnSendCallBack" /&gt;
  &lt;/ExtensionPoint&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>I tested it even in vorlon debuggger
  and i see my console log when the add-in is lunched, but not when item is sent,
  (heres my code and a screen shot to see that the office.onReady is doing console.log('9999') , but "checkBodyOnlyOnSendCallBack" function in not doing console.log()):</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>  Office.onReady(function(reason){ 
      mailboxItem = Office.context.mailbox.item;
      console.log('9999')
    });
    
    function checkBodyOnlyOnSendCallBack(event) {
      console.log('vvvv')
    }</code></pre>
  </div>
  </div>
  </p>
  
  <p><a href="https://i.stack.imgur.com/XK0To.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XK0To.png" alt="enter image description here"></a></p>
  
  <p>this is my outlook version on windows:
  <a href="https://i.stack.imgur.com/8P33X.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/8P33X.png" alt="enter image description here"></a></p>
  
  <p><strong>ANY HELP?</strong></p>