Selecting Multiple Drawers, Folders and Messages

  To select more than one drawer, folder, or message, press and
  hold the Ctrl key while clicking on each desired object.

  To select a range of drawers, folders, or messages, click MB1
  on the first object to be selected, then press the Shift key while
  clicking MB1 on the last object to be selected.

  To select all messages in an open folder, choose Select All
  from the Edit menu in the main window.  If more than one
  folder is open, all messages in those folders are selected.

  Additional topics:

  *   Selecting Drawers, Folders and Messages