The default keyboard only switches into landscape mode for the web browser. This utility can’t quite add that facility to other apps, but it creates a separate application into which you can enter larger quantities of text and then tap a button to fire them into the main mail program. If you rotate your phone and then put it down on the desk, you can just about type with two fingers. It would be so much cooler if this were integrated into the iPhone interface and be available directly from all applications.