Credit card application for marketing authorization refers to the cardholder's authorization to the credit card issuer or its partners to conduct marketing activities. When a user applies for a credit card or handles related business, the credit card issuer will provide the user with a marketing authorization agreement or option, asking the user to explicitly agree or choose whether to accept the user to send a specific type of marketing information to the user. This information includes product or service promotions, special offers, introduction of new features, etc.