imhist(1p) on Linux
The text 3dcad356ff1b, as Debian 9 (Stretch) shipped it.
treat mail/news history database
Flags it lists
-
--add -
--debug -
--dump -
--help -
--lookup -
--msg -
--remove -
--subfolders -
--verbose -
--version -
-a -
-d -
-h -
-l -
-m -
-r -
-s -
-v