cyrus-ipurge(8) on Linux
The text 6f313c135994, as Debian 12 (Bookworm) shipped it.
Cyrus IMAP documentation Delete mail from IMAP mailbox or partition based on age or size
Flags it lists
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-C -
-X -
-b -
-d -
-f -
-i -
-k -
-m -
-n -
-o -
-s -
-v -
-x