In mid-April, the Wall Street Journal reported (subscription) that Google may allow companies to use customer information, like email addresses, to assist with ad targeting. The change could occur within the year. According to anonymous sources, Google has been discussing the possible use of such data with advertisers, who have been pushing Google to reconsider its policy concerning first-party data for some time.

Google has been hesitant to allow advertisers to use first-party data,...

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