A content management system creates and modifies user notification queues for shared content items synchronized between a content management system and multiple devices. A user notification queue includes interactions with a shared content item that may be presented to a user to indicate recent interactions with the shared content item by other sharing users. The content management system sends the user notification queue corresponding to a user to the user's device when the user accesses the content item. The client device displays a content item in a window associated with a process on the device. A client application displays an interaction indicator that presents user notification queue content to the user.