KMailer - KMailer is the most proven customer e-mail relationship management software for successful opt-in e-mail marketing campaigns, subscriber lists building and online surveys. It makes building your business easy with tools that cover every aspect of e-mail marketing. Build your own opt-in contact lists, distribute online surveys, create and send e-mail campaigns in just minutes, and get real-time reports that help you measure ROI and refine your e-mail marketing strategy. It's never been easier to generate revenue and build relationships.