dovecot - Feb 2022 - Config for filtering (ignoring) specific mbox mail folders?

Folks:

I'm migrating to Dovecot to provide IMAP services for my personal network.

I have more than a couple of decades of mail in multiple (1000+) mbox 
mail files, but I don't care to expose all of those to IMAP.

Is there any way to filter out what mail folders Dovecot will LIST and 
provide access to using globs or regular expressions? I'd prefer to avoid 
rearranging the mbox files (e.g. to subdirectories) if possible.

I looked through the Dovecot documentation and didn't see anything 
promising, and I couldn't find any discussion of the topic online. The 
feature that looked like it might be closest was Namespaces, but I 
couldn't see how to use that to ignore specific mbox files.

Is there any facility within Dovecot (or a plugin) to filter out / ignore 
mail folders by name, RE or file glob?

Thanks in advance!


-- 
  John Hardin KA7OHZ                    http://www.impsec.org/~jhardin/
  jhardin at impsec.org                         pgpk -a jhardin at impsec.org
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