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Targeting based on First Seen Timestamp

GAUnverifiedAdded Sep 25, 2026

What it is: A built-in "First Seen" user property is now available in Guides and Surveys' remote evaluation. Cohort-based new user targeting has a reliability problem: membership updates run with a delay, so a brand-new user won't be included until after their first session has already passed.

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Also shipped on Mar 16, 2026

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