Close email automatically after replying

I prefer to read emails by opening them in their own window rather than using the Reading Pane.

Whenever I press Reply, Outlook opens a new message window but the original message is still left open as well and needs to be closed manually after I sent my reply.

As I often switch between applications while writing a message, this opened message gets “hidden” behind other windows and I end up with many opened message windows by the end of the day.

Is there a way to automatically close these windows when I reply?