Based on the information provided in your question, it seems you're facing an issue with inconsistent tracking of referral URLs in Mixpanel, specifically for the "Account Created" event. This is indeed a common challenge when implementing analytics, and there are a few approaches we can consider to address this using Mixpanel's features. Let me provide some suggestions based on the available Mixpanel documentation.
1. Super Properties:
One way to consistently capture the landing page URL across all events, including "Account Created", is to use Mixpanel's super properties feature. Super properties are automatically included with all events sent after they are set. You can set the landing page URL as a super property when a user first visits your site.
Here's how you can implement this using Mixpanel's JavaScript SDK:
javascript
// Set the landing page URL as a super property when the user first visits
mixpanel.register({
"Landing Page": window.location.pathname
});
This should be placed on all your landing pages. Once set, this super property will be included with all subsequent events, including "Account Created" [Mixpanel JavaScript SDK: Setting Super Properties](https://docs.mixpanel.com/docs/tracking-methods/sdks/javascript#setting-super-properties).
2. User Profiles:
Another approach is to use Mixpanel's user profiles feature. When a user signs up, you can set their landing page as a profile property. This way, even if the "Account Created" event doesn't include the referral URL, you can still access this information from the user's profile.
Here's how you can set a profile property:
javascript
mixpanel.identify(userId);
mixpanel.people.set({
"Landing Page": window.location.pathname
});
You would place this code on your signup page or when the user creates an account [Mixpanel JavaScript SDK: Storing User Profiles](https://docs.mixpanel.com/docs/tracking-methods/sdks/javascript#storing-user-profiles).
3. Event Properties:
If you want to ensure the landing page URL is included specifically with the "Account Created" event, you can explicitly add it as an event property when tracking that event:
javascript
mixpanel.track("Account Created", {
"Landing Page": window.location.pathname
});
This approach ensures that the landing page information is directly associated with the signup event [Mixpanel JavaScript SDK: Sending Events](https://docs.mixpanel.com/docs/tracking-methods/sdks/javascript#sending-events).
4. Borrowed Properties:
Mixpanel also offers a feature called "Borrowed Properties" which allows you to combine data between events. You could potentially use this to associate the "Viewed" event's referral property with the "Account Created" event. However, the documentation doesn't provide specific details on how to implement this for your use case [Mixpanel Blog: Borrowed Properties](https://mixpanel.com/blog/borrowed-properties-combine-data-between-events/).
