New York--Grey Direct's Grey E.Mail division said late Monday that it has partnered with six technology companies to provide inbound and outbound services to its clients. The half-dozen vendors are part of its EMmetrics platform for delivering b-to-b campaigns and reacting to responses. Grey E.Mail, New York, selected Advaya Direct, eFusion, Expression Engines Inc., Market Data Solutions, RadicalMail and One Interactive for its platform. The company plans to add other technology companies when new capabilities emerge. Grey E.Mail has such b-to-b clients as Internet telephony provider Deltathree.com and W Hotels.