Brezosoft KMailer KMailer is a customer email relationship management software for successful opt-in email marketing campaigns, subscriber list management and online surveys. You can build or import your contact lists, distribute online surveys, create and send email campaigns and more. It includes a message editor that allows you to create HTML emails from a word processor interface, as well as several template based design, that can be used and customized for your needs. KMailer supports import from various file formats, as well as database queries, and includes a built-in SMTP server that can optionally be used instead of external mail servers. You can send targeted emails based on user demographics, track responses, mail merge user information in messages and more.