Dovecot email archive make read only

Hello to all Virtualmin users.

Is it possible to set up a dovecot mailbox in Virtualmin so that it can be read only by one user?

I have the users “one@domain” and user “two@domain” under the domain “xy.domain.de
They send and receive emails via their account.
Now I have set up bcc_mapping to store all incoming and outgoing emails in the account archive@domain.de.
But now the user archive of the email server has the possibility to delete emails. I want to prevent this,
Can I set this in Virtualmin or even in dovecot?

Best regards