Colin: The volder list only scrolls a certain number of lines. With all the subfolders, I probably have about 100 folders in my list. It won't scroll that far, except by using the vertical scroll bar (which you can't do while dragging a message). Possibly this is a bug in the application.
Is there a way to select several non-consecutive messages before using claws-mail>message>move? On a Windows PC, I would do ctrl-right-click on several messages. How would I do this on a Maemo unit without a keyboard?