Moving the Currently Displayed Message

  Choose Move from the Read pop-up menu to move the
  current message to a different folder.

  Mail displays a dialog box in which you enter the name of the
  destination drawer and folder.

  Click on the OK button to move the message.

  When you move a message, the message is marked for
  moving but is not actually moved until the folder is closed.

  While the folder remains open, you can reverse the operation
  with the Undo Move/Delete menu item on the pop-up menu.

  After the folder is closed the message is moved.  The message
  can be retrieved only from its new folder.

  Additional topics:

  *   Overview of Mail

  *   Reversing the Move or Delete of the Current
      Message