SSalesCrew

Marketing data · 10 min · reviewed 2026-09-06

How do I connect PostHog and Google Tag Manager to a CRM?

PostHog needs a personal API key and the project id; the CRM pulls sessions hourly and can trace a lead back to the pages they visited. Google Tag Manager is optional: it uses the same OAuth bundle as Analytics and only reads container versions for the audit trail.

What you will need

  • Admin on the PostHog project (https://us.posthog.com).
  • For GTM: the OAuth bundle from the Google Analytics how-to with the scope https://www.googleapis.com/auth/tagmanager.readonly.

Steps

  1. 1

    Step 1

    PostHog: Settings → Personal API keys → Create. Scope Read on the project. Copy the key.

  2. 2

    Step 2

    Note the project id from the address bar (/project/12345/).

  3. 3

    Step 3

    In SalesCrew: Settings → Other keys → Product analytics (PostHog) → Set key. Paste {"api_key": "phx_…", "project_id": "12345"}. Save. Test.

  4. 4

    Step 4

    GTM (optional): Settings → Other keys → Google Tag Manager → Set key, paste the Analytics bundle with "container_id": "GTM-XXXX" added.

Common errors

401 from PostHog
the key is a *project* API key (phc_…), which is public. Create a *personal* key.
No sessions
the site does not load the PostHog snippet, or the project id is wrong.

How you know it worked

Test connection returns today's visitor count. Marketing → Sessions lists recent visits.

Where this goes in SalesCrew

Settings → Other keys → PostHog → Test connection. In your own workspace the same how-to opens beside the field, with your callback URLs filled in.

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