Tracking
Cross domain tracking
Keep the same visitor when checkout lives on another allowed host.
Cross domain tracking
Marketing site on www, checkout on pay, app on app — still one human.
How it works
- Tracker appends StoreMetrics visitor + session ids on links to allowed domains.
- Destination restores those ids.
- URL gets cleaned so you do not ship ugly query junk to customers forever.
When to use it
- Checkout handoff
- Subdomain sprawl that is still your business
- Related brand domains you intentionally share identity across
Add the hosts under Settings → General (additional domains / allow list).
Prompt
My funnel crosses domains: LIST_DOMAINS.
Explain how to configure StoreMetrics additional/allowed domains so visitor identity survives the handoff, and what to test in one incognito session.