Detailed information on how to import your audience, can be found here.
Though the Broadcast systems Dynamic Segment system enables communicators to create their own dynamic lists to send to via subscriber attributes, there will always be a need to upload static manual lists. A simple one column CSV of valid email addresses is all that’s required, allowing the communicator to quickly create a target audience for a one off communication, or to a disparate group not easily targetable by subscriber attributes.
Detailed information on how to create segments and lists, can be found here.
