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Upstack Data

PostHog

Stream resolved product and commerce events into PostHog for analysis on a person, not a session.

DestinationAnalytics & CRM

About PostHog

What PostHog is, and why identity matters to it.

PostHog is a product-analytics platform covering events, funnels, session replay and feature flags, typically run by product and growth teams.

Product analytics answers questions about people, not sessions — so the analysis is only as good as the identity resolution underneath the event stream.

How it works

How PostHog works.

PostHog captures events against a distinct_id. When someone later identifies — logs in, converts — PostHog aliases their anonymous ID to the identified one and merges the histories, so earlier anonymous activity is retained. Person properties can be set on the same call. Funnels, retention and paths are computed over that merged person, and session replay is linked to it. The identity merge is the mechanism the entire analysis rests on.

With Upstack Data

Get more out of PostHog with Upstack Data.

PostHog’s identity merge is powerful and only fires when someone identifies themselves. Upstack resolves the person before events arrive, so anonymous activity is already attached — including sessions on devices where the user never logged in. Funnels and retention then measure people rather than devices, and session replay links to a complete history.

What you can do with it

Three jobs this connector does inside PostHog.

  1. Send complete conversions

    Conversions reach PostHog through its server-side API with restored click IDs and hashed identifiers attached, so more of what you send is matched on arrival — and the conversions you never saw stop being invisible.

  2. Optimise on the customer you want

    Map any order attribute to the conversion PostHog receives — profit rather than revenue, new customers rather than repeat buyers, high-value orders rather than every checkout — so the platform learns from the buyers worth acquiring.

  3. Analysis on a person

    Product and commerce events land in PostHog already resolved, so funnels and retention analyse people rather than sessions.

Pre-built connectors

12 sources connect to PostHog.

Whichever of these you run, PostHog is one switch away.

Get PostHog tracking right.

A 15-minute walkthrough tailored to your stack and channels.