Polk Provides Industry Intelligence to CityTwist For Email TargetingPolk, the Southfield information and database provider, said Wednesday it had entered into a business agreement with Boca Raton, Fla.-based CityTwist, one of the largest national email marketing companies in the United States, to provide proprietary in-market timing and consumer brand affinity data for integration into CityTwist's marketing services for auto dealers.

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