Onelink is a mobile attribution and deep linking platform developed by Adjust, a global leader in mobile marketing analytics. It enables advertisers and publishers to track user acquisition, measure campaign effectiveness, and deliver users to specific content within an app using changing links.
Onelink simplifies the process of connecting marketing campaigns to app engagement. When a user clicks a campaign link, Onelink captures device identifiers, referrer data, and time stamps to attribute the install or action to a specific source. This data supports accurate reporting and budget allocation across channels like paid search, social media, and display ads.
Unlike basic URL redirect services, Onelink maintains context across platforms. For example, a user clicking a Facebook ad for a new product feature gets routed not just to the app store, but directly to that feature upon installation. This capability improves conversion rates and reduces user drop-off during the process from ad to app.
Onelink operates through a combination of server-side logic and client-side SDK integration. When a marketer creates a campaign, they generate a unique Onelink URL. This URL contains parameters such as campaign ID, source, medium, and custom metadata. The link points to a centralized endpoint managed by Adjust.
When a user clicks the link, the request is logged in real time. Onelink records the device's advertising ID (AAID or IDFA), IP address, and timestamp. If the user installs the app later, the app's SDK sends the same identifier back to Adjust's servers. Onelink then matches the click event with the install event, confirming attribution.
Once attribution is confirmed, Onelink triggers a deep link. The app receives the original URL parameters and uses them to go through to a specific screen-such as a product page, login prompt, or promotional offer. This ensures users land exactly where intended, improving retention and engagement.
Onelink supports multiple use cases across marketing, product, and analytics teams. Its core functionality includes campaign-level attribution, cross-device tracking, and customizable deep links.
For example, a gaming company running a holiday promotion might create a single Onelink URL for all social media ads. Each ad version includes a unique campaign parameter (e.g., "fb_holiday_2024" or "ig_new_user"). After installation, the app checks the campaign value and displays a welcome bonus tailored to that channel.
Onelink also handles fallback logic. If a user clicks a link but doesn't have the app installed, the system redirects to the appropriate app store. Once installed, the app opens and executes the deep link. This smooth handoff increases conversion rates by up to 30%, according to Adjust's internal benchmarks.
| Use Case | Onelink Function | Example |
|---|---|---|
| Campaign Attribution | Tracks installs from specific ad sources | Facebook ad → Install → Attribution to "fb_retargeting_2024" |
| Deep Linking | Routes users to specific in-app content | Clicking a Google Ad → App opens to "/profile/settings" |
| Fallback Handling | Redirects to app store if app not installed | User clicks link → redirected to Apple App Store or Google Play |
One common misunderstanding is that Onelink is a standalone tool. In reality, it functions as part of a larger system. Onelink requires integration with Adjust's SDK and backend infrastructure. It cannot operate independently of the Adjust platform.
Another misconception is that Onelink works across all devices without configuration. While it supports iOS, Android, and web environments, each platform requires separate setup. For example, iOS requires SKAdNetwork compliance, while Android mandates proper intent handling in the manifest file. Without correct implementation, deep links fail silently.
A less obvious point: Onelink does not replace analytics tools like Mixpanel or Amplitude. Instead, it feeds data into them. Onelink provides attribution and routing, but downstream analytics platforms handle user behavior analysis. You can't rely solely on Onelink for session duration or feature usage insights.
I once worked with a travel booking app that struggled with low conversion from Instagram ads. Users clicked ads promoting last-minute deals but often abandoned the flow after downloading the app. The landing page was generic, and users had to go through manually to find the deal.
We implemented Onelink with a custom deep link structure. The ad URL included parameters like "utm_source=instagram", "utm_campaign=lastminute_2024", and "deal_id=12345". Upon install, the app checked these values and automatically opened the "Deals" tab with the relevant offer highlighted.
Results after four weeks: install-to-deal-view rate increased from 18% to 67%. User feedback improved -"I clicked the ad and got straight to the offer." This demonstrates how Onelink transforms passive clicks into actionable conversions.
According to Adjust's official documentation, Onelink processes over 10 billion events monthly across 150+ countries. The platform complies with GDPR, CCPA, and Apple's App Tracking Transparency (ATT) requirements. These standards ensure data privacy and legal compliance in global campaigns.
The Mobile Marketing Association (MMA) recognizes Onelink as a standard in cross-channel attribution. In their 2023 report on mobile advertising effectiveness, MMA cited Onelink's ability to reduce attribution errors by 40% compared to legacy methods relying on server-side logs alone.
Onelink is not a consumer-facing product. It is designed for developers, marketers, and analytics teams. End users never see the Onelink domain-they interact only with branded URLs or native app screens.
Onelink is a mobile attribution and deep linking solution that connects marketing efforts to user actions within apps. It enables precise tracking of campaign performance and delivers users to targeted in-app content. By integrating with Adjust's system, Onelink ensures accurate attribution and consistent routing across devices and channels.