In some implementations, a graphical user interface of an electronic messaging system can highlight addressees of a message in a group of candidate message recipients. For example, the graphical user interface can present graphical objects corresponding to candidate message recipients. When a user composes a message, the user can provide input identifying a recipient of the message. In response to the user input identifying the recipient of the message, the graphical user interface can highlight a graphical object corresponding to the identified recipient. In some implementations, the graphical user interface can subdue (e.g., grey out) graphical objects corresponding to candidate message recipients that are not identified in the message in order to highlight the identified recipient objects. In some implementations, a message recipient can be an individual contact (e.g., person). In some implementations, a message recipient can be a message stream.