Cardkive helps people preserve meaningful greeting cards by turning them into professionally produced hardcover keepsake books. Its service is designed for cards from many occasions, including weddings, birthdays, baby showers, retirements, and moments of sympathy. Customers order a standard or larger box, fill it with cards, and send it using the prepaid shipping label provided. The standard box typically holds 50–60 cards, while the larger option accommodates approximately 100–120.

After receiving the cards, Cardkive photographs and edits them, then creates a book layout for the customer to review. Customers can approve the proof and make changes, such as adjusting the page order, choosing a cover image or title, and adding captions. The price includes card digitization, book design, printing, and shipping, and customers can request the return of their original cards. Cardkive offers a dedicated Wedding Cards Book for engagement, bridal shower, and wedding cards, as well as its general Cards Book for other occasions. The company presents its books as personal keepsakes and gifts.