Still not sure how to do this one. Possible solutions:
<meta>
tagMaybe simply have a Refresh button which reloads the page? For starters it is probably the best.
Later on, we could think of a dedicated endpoint which could be polled occasionally for new messages. This could bring up an on screen notification "New message from X,Y ...Refresh"? Or it could simply re-render the messages list (if not on a page > 0)?
For now, I've added a meta tag which auto-refreshes the page every 60 seconds.