doveadm-dump(1) on Linux
The text 4ac4d17aa0ec, as Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster) shipped it.
Dump the content of Dovecot's binary mailbox index/log
Flags it lists
-
-D -
-o -
-t -
-v