mailagent(1) on Linux
The text 670ea4bc553d, as Debian 1.2 (Rex), Debian 1.1 (Buzz) shipped it.
an automatic mail-processing tool
Flags it lists
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-F -
-I -
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-V -
-c -
-d -
-h -
-i -
-l -
-o -
-q -
-r -
-s -
-t