Distinct customer emails, matched across every Lorikeet subscriber in all three regions. The network we'd broker across is already in production.
analytics_stg.regional_customer across all three regions. Matched on lower-cased trimmed email. Dropped noreply, test, example.com and lorikeet addresses. Capped at emails in ≤10 subscribers so system and shared addresses don't inflate the count. ~1.6 GB scan.