Abstract: Provided is a method for navigating thread-type messages performed by a user terminal. The method comprises extracting a plurality of core elements based on information collected from the thread-type messages in which a plurality of conversation messages are grouped, generating thumbnail configuration information on the thread-type messages using the plurality of core elements, and displaying a thumbnail view based on the thumbnail configuration information, the displaying being based on a user input for the thread-type message.

Abstract: A method for displaying an unread message according to some embodiments of the present disclosure includes identifying a first unread message of a first chat room in which a user using the computing device participates, and a second unread message of a second chat room in which the user participates, wherein the first chat room and the second chat room are different, and the first unread message and the second unread message are different and simultaneously displaying the first unread message and the second unread message on one screen in response to the user's selection input to a collect view button.