title: onclick on button outlook email should open using Javascript or using anchor tag
body: <p>trying to use html but the email content part have variables also .. like have to display his/her contact number or registration number which I cannot hard code in email template , so if I use JavaScript and try to do with text area
  how can I use variables inside it ?</p>
  
  <pre><code>&lt;textarea id="myText" style="display:none"&gt;
  
  function sendMail(){
      var link = "mailto:me@example.com"
          + "?cc=myCCaddress@example.com"
          + "&amp;subject=" + escape("This is my subject")
          + "&amp;body=" + escape(document.getElementById('myText').value);`
  
      window.location.href = link;
  }
  </code></pre>