On 09/10/2018 10:54, tselmeci at 486.hu wrote: > I don't think it's relevant, since with the very same Sylpheed an > older Dovecot (1.x) could erase the unneeded mails. Perhaps some file > permission issue on my server...? Do you see anything in Dovecot logs? It should definitely log if there were permission issues. Good luck, Reio