Phone number verification made mandatory for message assets from August 1, 2025

Google told advertisers that phone numbers used in message assets must be verified by Google. New message assets needed verification from August 1, 2025 and existing ones from September 1, 2025; unverified numbers stop the asset from serving.

Reported from Google's advertiser email shared on LinkedIn. Google later published broader message asset requirements (enforced from October 30, 2025) that also require verified message IDs and usernames.