What is a Card Mailer used for?

A Card Mailer is primarily used to send new or reissued cards to cardholders along with important information related to the card. This includes details such as activation instructions, terms and conditions, and any pertinent guidelines ensuring the cardholder understands how to use their new card effectively. Providing this information at the time of receiving the card is crucial for enhancing user experience and security.

While online access to cardholder accounts, marketing new credit card offers, and sending transaction notifications are all important aspects of card services, they do not specifically pertain to the primary function of a Card Mailer. The focus of a Card Mailer is strictly on the physical mailing of cards and relevant attached information, making option B the most accurate choice in this context.