title: Whatsapp api to let visitors contact us on whatsapp
body: <p>In my holiday site I want to add whatsapp communication with visitor. I need whatsapp api to let visitors contact us on whatsapp. I have check multiple solution for this but don't find any solution yet for this.</p>
  
  <p>I need functionality like below </p>
  
  <p><a href="https://i.stack.imgur.com/g6ar9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/g6ar9.png" alt="whatsapp"></a></p>