doveadm-deduplicate(1) on Linux
The text a17cb9f77c85, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
expunge duplicate messages
Flags it lists
-
-A -
-D -
-F -
-S -
-m -
-o -
-u -
-v