button to share on imessage

<div class="share-post">
  <span>Share this post:</span>
 <a id="imessage" href="sms:&body={{encode title}} {{url absolute="true"}}">iMessage</a>
</div>
 
#imessage {
    display: none;
}

@media only screen and (max-width: 720px) {
	#imessage {
    	display: inline-block;
	}
}