[Dovecot] Doveadm?

[Tommy Berglund]

I have a question?
Is it possible that with doveadm delete all but the last x-number of 
messages in a folder. For example to retain the last 200 messages in the 
folder.
If it is possible, how do you do it?
Something like "doveadm expunge -u jane.doe at example.org mailbox xxx"

Thank you!
-- 
//Tommy