You are able to filter for your members in each individual package or you can view all of your members in one list.
Navigate to the 'Membership' module on the left-hand side of your admin page.
In the top right you will see the option 'View all members'.
Once selected a list of every member will appear.
You are able to filter your member list by any of the columns in a member list view.
Once the list has been filtered, the email and export functions will only apply to the remaining members in the list.
You are also able to just view the main contacts by changing the menu just above the last from column to 'Main Contacts':