Deep linking is the use of a URL that opens a specific screen or piece of content inside a mobile app, rather than the app's home screen or a web page.
What is Deep Linking?
Teams typically implement deep linking wherever a link needs to survive being shared outside the app: in marketing emails, push notifications and in-app notifications, paid ads, and user-to-user shares. The scope usually grows over time, starting with a handful of hand-mapped links, one per campaign, and expanding into a general system where every content object, such as a post or profile, has its own linkable identifier. A common caveat is that a plain deep link only works if the app is already installed, which is why most production setups pair it with a fallback path for new users, typically a deferred deep link or a web landing page that redirects to the app store. Some teams use "deep linking" and "universal links" interchangeably, but the former is the general concept and the latter is one specific implementation of it.
Why Deep Linking Matters
Every step between a tap and the promised content loses users. Without deep linking, a user who taps a shared post opens the app on the home screen and has to find the post manually, and many stop there. Deep linking removes that friction, which raises conversion on shared content, re-engagement campaigns, and notification taps. For a growth team, it is what makes user-to-user sharing work as an acquisition channel, since a shared link can carry the user through install and straight to the content. For a product team, it turns every notification and email into a direct path to a specific action.
Types of Deep Linking
| Type | How it works | Handles new users? |
|---|---|---|
| URI scheme | Custom scheme such as myapp://post/123 opens the app if installed | No, fails if app is missing |
| Universal or App Link | Standard https URL that the OS routes to the app if installed, otherwise the web | Falls back to web only |
| Deferred deep link | Stores the destination, sends the user through the app store, then opens the content on first launch | Yes |
Worked example: a brand sends 100,000 push notifications about a live stream. With a link to the app home screen, 8,000 users open the app and 2,400 find and join the stream, a 30% completion from open to destination. With a deep link straight to the stream, the same 8,000 opens produce 6,800 joins, an 85% completion. The notification did not change; the path after the tap did.
Deep Linking and social.plus
Social content is the content users most want to share, and sharing only converts if the recipient lands on the exact post, group, profile, or live stream. social.plus provides the app engagement infrastructure for feeds, groups, chat, live streaming, stories, and profiles, and each of these objects has a stable identifier that a brand's app can map to a deep link. That means a reply notification opens the thread, a group invitation opens the group, and a shared stream opens the stream. The brand owns the linking layer and the app; social.plus supplies the social objects the links point to.
Key Takeaways
- Deep linking opens a specific in-app screen from a URL, skipping the home screen and manual navigation.
- URI schemes, universal links, and deferred deep links each cover a different case; deferred links are the only type that survives a fresh install.
- Measure completion from tap to destination, since that is the number deep linking changes.
- Social content depends on deep links to make sharing, notifications, and invitations convert.