I'd like the option to collapse the window on the right that shows the template thumbnails and preview options for email broadcasts. As it is now stationary and scrolls down with me, the text of my email ends up behind the window. Working on a laptop gives me a very limited space at the bottom of the screen in order to edit fully-visible text.

If the window is intended to be visible at all times, the body of the email should have a shortened width to account for it rather than the window going on top of the content.