Thanks Aki,
what about the old folders like INBOX.some, INBOX.some.other that are present in the archive at this moment, do them will be changed in INBOX/some or what?

Il 28/06/2020 19:28, Aki Tuomi ha scritto:

On 28/06/2020 20:19 Stefano Gatto - Fly2Net sas <gatto@fly2net.it> wrote:

 
Hi all,
my dovecot version is 2.2.13, quite standard configuration. Can I add 
directive LAYOUT=fs in dovecot configuration without losing all my 
archived messages? This should modify the separator of email folders 
from dots to slashes, correct?

BR
Stefano

Uh no.

LAYOUT=FS changes the *physical* layout of your mails, which means it will not find your mail anymore. If you want to change the logical hierarcy separator, use

namespace {
  separator = /
}

Aki