Am 2015-04-05 um 19:12 schrieb Ramón Casares: > Now I am looking for an IMAP server > that can serve this collection > in a read-only (ro) manner. That is, > the server should not write > the mailarch dir at all. Dovecot ACL might be what you want? http://wiki2.dovecot.org/ACL Probably still writes indices… -- peter