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You have an app installed in which you are logged in. You receive an email from the service and you click on a link in that email. Does it open your browser on the mobile website that requires that you log in?


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Wouldn’t it be great if the app was opened instead? The app you made an effort to install and log into? This is possible, and the solution to this issue is called Deep Linking.

The issue: an example with Twitter email opening mobile website and asking for login while the app is installed!


In fact, mobile apps and the web as we know it (pages, browsers, email…) are 2 separate worlds.

Just like apps installed on your computers like Word or Excel are very different from websites. And in the beginning, mobile apps were meant to be « games and calculators », but not thought primarily to be accessing web content. Hence the web standards HTML links / HTTP URL don’t work in the apps universe.

However, the tech mechanism to open an app to a dedicated section of content (called URL Scheme) was there from the very beginning, but it’s never been compatible with web standards (HTTP links).

Two separate worlds

* note that Android apps can capture web links, but this solution is not multi-platform and can lead to bad user experiences (links opened but not handled by apps).


Deep linking reunifies these 2 separate worlds/apps and web and allows to open apps to specific sections or contents with standard (HTTP) weblinks.

It uses clever tech mechanisms (details below) to do that, but you’ll be more interested in what it allows. Indeed, since digital marketing channels all rely on web standards, making them work with apps allows you to leverage all your digital marketing efforts also with your app!

Note that the subject is not new (I was working on that back in 2010 at Deezer!), but it’s currently trending a lot because deep linking is a requirement for retargeting and rich advertising experiences.

The mobile marketing industry realized it’s a major concern, and it seems nowadays every mobile actor provides a deep linking solution.

For Google, Facebook and Twitter, it’s a major concern since having deep linking implemented in all apps means more advertising opportunities – thus revenue growth! That’s why they all invest heavily in this space: Facebook with AppLinks, Google with AppIndexing on Android and Twitter with App Cards.


How about trying it live by yourself?


  • Have an iOS or Android smartphone
  • Have the official Twitter app installed
  • Have a QR Code scanner on your smartphone if you’re currently reading this article within your desktop browser

If you’re reading this article on mobile:

Just click the links under the QR Codes below, they should open your Twitter app to the right user profile. Try to come back later on this article from desktop to live the full experience!

If you’re reading this article in a desktop browser:

1st, click on this link in your desktop browser. You shall see a dummy standard web page (it could be anything, app landing page or redirect anywhere). If an error popup appears, just ignore it (due to implementation in crappy mode).

2nd, scan the QR Code below with your smartphone. It should open your Twitter app to the right user profile.

Note that it works everywhere but on mobile, it opens the app directly! And in case you did not notice, you’re one button press away to follow me or Apptamin on Twitter

NB: I implemented this experience in quick&dirty mode, so there are a few minor cases in which it might not work for you. It would not happen with a real industrial solution, of course!


The tech mechanism behind deep linking relies on a simple idea: routing the various cases to their proper solution. Eg, route web browsers to a web page (HTTP URL) and route mobiles to open app (URL Scheme).

And in the meantime, if on mobile and the app is not installed, lead user to install it.

Deep linking – routing the proper solution

Note that it’s not always possible to detect if an app is already installed, but there are workarounds (more tech details here).


Web2App – Clicking the map in Google local results directly opens the Google Maps app
Mail2App – Clicking a content in an email from Linkedin directly opens the Linkedin app on that content


As seen earlier, deep linking will allow users that click links on social media to open the app directly. If your app is content based, you can transform this in a powerful organic acquisition and retention channel.

Viral mechanics based on social networks rely on 2 behaviors of users: production and consumption.

On one side, a small part (say, 10 to 20%) of users share contents on social media, for example by sharing music in the case of Deezer or Spotify. The other users will then consume these shared contents, resulting in more usage of the app (retention). If these users don’t know about the app, it’s a great way to have it discovered and installed (acquisition), particularly since the in-app-content has been shared by a trusted friend.

Growth hacking: generating acquisition and retention

But there’s more: part of these content consumers or new app users will also share content… leading to a viral loop!

Note that Tapdaq made some great articles on viral loops (here and on their own blog), and deep linking is a great ingredient to make things work even better or to remove most of the friction.

You’ll also want to bring in your app more ways for users to share content, or to incentivize them to share. That’s what Deezer and Spotify did early on (2010), by enabling users to link their Facebook accounts and share automatically when they where liking musics, albums or artists in the app.

Just keep in mind that users will look for a “ROI” when sharing. In the case of music services, it’s clearly to make others discover new music or to be recognized as a great music lover (self branding is indeed a common aspiration of users on social networks).

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To view more app promotion tips:

How to Humanize Your Fintech App

Gaming App Install Ads: How to Level Up User Acquisition


More related app promotion guides:

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