mailu dovecot with virtual folders

--- dovecot/conf/dovecot.conf	2017-07-10 20:55:14.000000000 +0000
+++ PATCHES/dovecot.conf	2017-09-20 18:56:53.000000000 +0000
@@ -3,9 +3,9 @@
 ###############
 log_path = /dev/stderr
 protocols = imap pop3 lmtp sieve
-postmaster_address = {{ POSTMASTER }}@{{ DOMAIN }}
-hostname = {{ HOSTNAME }}
-mail_plugins = $mail_plugins quota
+postmaster_address = THE-ADMIN-GUY@MY-DOMAIN.TLD
+hostname = MY-HOST.MY-DOMAIN.TLD
+mail_plugins = $mail_plugins quota virtual
 submission_host = smtp
 
 service dict {
@@ -52,6 +52,30 @@
   }
 }
 
+namespace {
+  #prefix = INBOX.    # show inline with oder INBOX/ folders
+  prefix = Virtual.  # show as custom top-level structure
+  separator = .
+  location = virtual:/mail/%u/virtual
+
+  # # reload dovecot
+  # doveadm reload
+  # # create your first virtual folders:
+  # cat > /mail/%u/virtual/recent/dovecot-virtual < EOF
+  # INBOX
+  # INBOX/*
+  #   all younger 172800
+  # ^D
+  # cat > /mail/%u/virtual/unseen/dovecot-virtual < EOF
+  # *
+  # -Trash
+  # -Trash/*
+  #   unseen
+  # ^D
+  # # fix permissions
+  # chmod -R mail.mail /mail/%u/virtual
+}
+
 ###############
 # TLS
 ###############