To help you manage and track credit card payments, a dedicated report is available under
Inf. and Statistics > Clients > Credit Card Customers
Within this report, you can view the credit card expiration dates. This filter allows you to keep track of cards that are about to expire so you can prompt customers to enter their new card details
Additionally, an option is available under System > System Configuration > Communications > Automatic Emails, within the Financial section, to automatically send a notification to the client