How do I prevent the automatic choice

How do I prevent the automatic choice of messages to be worked on? For example, when I’m finished working on an item, and I delete that item, eM Client automatically goes to the very next item for me to work on. I may not want to work on that next item (and have it marked read). I want to CHOOSE what I work on, not have eM Client choose automatically.

As far as I know that behavior can’t be changed. It is also an issue for me.