title: Open email app url
body: <p>I want to add link to my website "Check your email". If user is on mob version link should open mail app or email service url in browser if app is absent.
  For example user has test@gmail.com. Link should open gmail app or <a href="https://mail.google.com" rel="noreferrer">https://mail.google.com</a> in browser if user has no gmail app. Maybe it's better to launch user preferred mail app instead of gmail.</p>
  
  <p><strong>Android</strong></p>
  
  <p>I found <a href="https://developer.chrome.com/multidevice/android/intents" rel="noreferrer">https://developer.chrome.com/multidevice/android/intents</a> whith intent link intent://scan/#Intent;scheme=zxing;package=com.google.zxing.client.android;S.browser_fallback_url=http%3A%2F%2Fzxing.org;end</p>
  
  <p>It works fine but I can't understand how to do same thing with <a href="https://play.google.com/store/apps/details?id=com.google.android.gm&amp;hl=ru" rel="noreferrer">https://play.google.com/store/apps/details?id=com.google.android.gm&amp;hl=ru</a> or any other app</p>
  
  <p>Also I found <a href="https://developer.android.com/reference/android/content/Intent.html#ACTION_SEND" rel="noreferrer">https://developer.android.com/reference/android/content/Intent.html#ACTION_SEND</a> to open mail app but intent://send#Intent;action=android.intent.action.SEND;end not works</p>
  
  <p>Can anybody give me working url to open gmail app or default mail app?</p>
  
  <p><strong>iOs</strong></p>
  
  <p>Universal links <a href="https://developer.apple.com/library/content/documentation/General/Conceptual/AppSearch/UniversalLinks.html#//apple_ref/doc/uid/TP40016308-CH12" rel="noreferrer">https://developer.apple.com/library/content/documentation/General/Conceptual/AppSearch/UniversalLinks.html#//apple_ref/doc/uid/TP40016308-CH12</a></p>
  
  <p>Internet has many articles how to link your site with your app. But how can I start another app from my site?</p>