direct marketing services
noun[plural]
MARKETINGukusmarketingservicesthat onecompanyprovidesfor another, whichinvolvecommunicatingdirectlywithconsumers, forexamplebyphone,mail, or on theinternet:
Acarefullymaintaineddatabaseofcustomersiscrucialtoofferingsuccessfuldirectmarketingservices.