Using Pop-Up Menus

  Pressing MB3 over an object in the main window displays a
  pop-up menu.

  Pop-up menus contain items for many commonly performed
  tasks.  The items on a pop-up menu vary according to the
  type of object (drawer, folder, or message), and they act on
  the object on which MB3 is positioned.

  Pop-up menu items duplicate pull-down menu items.

  Additional topics:

  *   Overview of Mail