Conversion-based customer lists to be auto-assigned a customer type from August 18, 2026

Google notified accounts that from August 18, 2026 it will process conversion-based customer lists and automatically assign each eligible list a customer type (existing, new, other) unless the advertiser labels or opts out first, which affects new-customer acquisition bidding.

Surfaced through in-product notifications from June 17, 2026; no Help Center or blog post was found. Mislabeled lists can silently skew Smart Bidding for acquisition goals.