title: Send user to page on mobile app when clicking email link
body: <p>I have just started an <code>Ionic 2</code> mobile app. </p>
  
  <p>I am setting up an <code>update password</code> process where a user can enter their email, click a "send password update email" button which then emails them a link. They can click that link which takes them to a page where they can update their password.</p>
  
  <p>How do I send them a link in their email that when clicked on will open up the app and take them to a specific page?</p>
  
  <p>Even more complicated is that I have a web app also. So if I'm sending them an email, should I show <code>update password on website</code> and <code>update password on mobile app</code> links? Or should I just add a link to the website? </p>