Integration Guides

How to give your end-users access after they purchase through a Zellify funnel.

Zellify handles the funnel experience and checkout, but it does not grant access or entitlements to your end-users. That is your responsibility.

After a visitor completes a purchase in your Zellify funnel, you need a way to:

Create their account in your system
Grant them the entitlements they paid for
Route them to your product (mobile app, web app, or both)

These guides cover the most common ways to solve this, depending on your product type and tech stack.

The Linking Key: `app_user_id`

Every integration scenario relies on one concept: the app_user_id.

When a visitor initiates checkout in your funnel, Zellify generates a unique app_user_id and attaches it to:

This same app_user_id is available on the success page through the Deep Link Button component, which can interpolate it into any URL — whether that is a mobile deeplink or a web redirect.

The app_user_id is what connects the payment event to the user in your system. It is the bridge between Zellify, your payment provider, and your product.

The Deep Link Button

The Deep Link Button is a funnel component designed for success pages (or any post-payment page). It renders a button that links the end-user to your product.

In the component's configuration panel, you can build a URL that interpolates app_user_id and email — the two values most commonly needed to identify the user on the other side.

This works for:

Mobile deeplinks — route users to your iOS/Android app via a deeplink URL (compatible with Adjust, AppsFlyer, and similar attribution tools)
Web URLs — redirect users to your web signup page, dashboard, or any other web destination