On Monday, March 21, 2011 07:53:04 pm Max Hetrick wrote: > If anyone is using Thunderbird, there's a handy add-on called Remove > Duplicate Messages on Mozilla's add-on site. As a pointer, the kmail I'm using, from within Kontact, also can do de-duplication; click 'Folder' then 'Remove Duplicate Messages.' Ctrl-* is the listed keyboard shortcut.