title: Open app when tapping website URL from email
body: <p>When my users receive an email from us, I want them to be able to tap the link in that email and open our app. </p>
  
  <p>This is NOT a custom URL scheme, but just a link to our website. So, if the user tapped the link <code>www.mysite.com?data=123</code>, how can I make iOS know that my app handles all <code>www.mysite.com</code> URLs in my app instead of opening <code>Safari</code>?</p>