MessageMedia Inc, the Boulder, Colorado-based provider of email- based customer relationship management and direct marketing services, on Thursday announced its second acquisition in as many days as it signed a deal to buy Decisive Technology Inc in an all-stock deal valued at $50m. DTI, based in Mountain View, California, provides customer feedback software and value-added services that allow businesses to monitor and analyze customers’ opinions. Its clients include America Online Inc, Microsoft Corp, Compaq Computer Corp, Oracle Corp and Apple Computer Inc. MessageMedia has its sights set on becoming a leader in online customer relationship management as e-commerce continues to boom. The DTI deal comes only a day after Wednesday’s acquisition of email marketing software vendor Revnet Systems Inc for $46m.