According to the shortcut list it is possible to mark an entry as read and go to the next one with 't'.

t throw current item (mark as read and open next)

Unfortunately it does not work for me.

At the moment I have to use 'm' and 'space' to reach the desired beahaviour.

m mark and unmark current selected entry as read/unread
space select and open next entry

Is 't' not working in general or is it just not working for me?