If you are constantly sending broadcast messages to the same audience members or you want to segment your subscribers by Company Name, for example, you'll want to create a Text List. A Text List is a list of saved of recipients who you can repeatedly send messages to without having to select them each time.
To Create a Text List:
1. Click Audience in the left menu. 
2. Click the Text Lists tab below.
3. Click the Create Text List button. 
4. Enter a name for your text list.
5. Click Create Text List.