I do not know how to "download" your settings from the web page, as no link comes up in your response. I'm glad you can see my picture, however.
The monitor is actually a Acer AL2216W. If I open the email on the primary monitor (laptop LCD), it works correctly. I can drag that window to the secondary monitor and it will remain legible.
The problem only occurs if I have the main "Mail" window open on the secondary monitor, and then double click an email. Since there are no window elements, I cannot scroll, drag, move, or resize the window--I can only close it with a cmd-w.
And the desk is messy because I had to move some stuff around so I could get both monitors in the picture at the same time. It's never really clean, but it looks worse than usual in the shot.