import { NotificationActions, NotifcationContainer } from 'material-ui-notifications';
...

    
     { 
            NotificationActions.addNotification(
                {
                    headerLabel: "Mail",
                    secondaryHeaderLabel: "timohanisch@googlemail.com",
                    timestamp: "Now",
                    primaryColor: "#ff0000",
                    title: "Timo Hanisch",
                    text: "Yeah this seems like a pretty good idea!",
                }
            ); 
        }}
    />
 
...