It is now possible to use iBill (a credit card payments processor) to manage subscribers and collect money for subscriptions.
This first level of integration will tie your custom subscribe box to the iBill payment system. After completing your subscription form, subscribers will be taken to an iBill payment form. Once payment information has been received and authorized by iBill, the subscriber record can be moved to a particular sub-list and the password status for the subscriber record will be set to 'Authorized'.
Future integration will include mid-cycle updates from iBill and hands-off account management.