With Internet Mail Manager you can create and modify groups of subscribers or customers in nearly any way to better target your customers.  These groups can be static, where the members don't change unless you add or remove them.  A powerful feature of Mail Manager is dynamic grouping, where members change from moment to moment depending on your web registrations, survey data, response tracking, or subscriber preferences.

Mail Manager's sophisticated grouping feature ensures that the same email can't be sent to the same person twice.  Also, you can tailor a campaign to specific groups with precise organization.