Computerized database management services, namely, management of a network of business-to-business and business-to-consumer electronic mail names comprising members who have given their permission to receive electronic newsletters and/or electronic messages from sponsors and other third parties, and identifying, appending, or correcting electronic mail addresses for customers; marketing services, namely, electronic mail campaign management, electronic mail list brokerage, selection, and targeting, electronic message creation, electronic mail transmission, lead management, customer relationship management, web-based lead and order capture, database building for storage, retrieval and updating customer data, directing users to customer web sites, campaign analysis and marketing performance tracking and reporting