And I expect that others do also.
After deleting the last unread message, the "message reader window" automatically closes.

Then I do the following:
- minimize the main PP window.
This happens about 20 or more times a day.

I suggest that an option be added that will minimize the main PP window
when the last unread message is deleted (or go to next unread message fails).
gordon
I know that <ESC> will minimize the main PP window, but that is not the best solution.