The Newsletter Contact Manager can be accessed through the Newsletter Dashboard. Once there, you can add / edit / remove contacts from your project, and even filter them by category 😎.
AppDrag Newsletter Contact Manager
You can import contacts from your Gmail account or from a CSV file.
If you wish to import addresses from a CSV file, bind the CSV columns to the ones in the newsletter contact manager. You can add them to an existing contact list or create a new one.
Be cautious not to import purchased lists, since if you reach a hard bounce rate, your newsletter offer risks getting suspended.