diff --git a/orchestra/contrib/mailboxes/admin.py b/orchestra/contrib/mailboxes/admin.py
index de5da9e3..80482abd 100644
--- a/orchestra/contrib/mailboxes/admin.py
+++ b/orchestra/contrib/mailboxes/admin.py
@@ -17,6 +17,7 @@ from .actions import SendMailboxEmail
 from .filters import HasMailboxListFilter, HasForwardListFilter, HasAddressListFilter
 from .forms import MailboxCreationForm, MailboxChangeForm, AddressForm
 from .models import Mailbox, Address, Autoresponse
+from .widgets import OpenCustomFilteringOnSelect
 
 
 class AutoresponseInline(admin.StackedInline):
@@ -81,12 +82,17 @@ class MailboxAdmin(ChangePasswordAdminMixin, SelectAccountAdminMixin, ExtendedMo
             self.actions = ()
         return super(MailboxAdmin, self).get_actions(request)
     
+    def formfield_for_dbfield(self, db_field, **kwargs):
+        if db_field.name == 'filtering':
+            kwargs['widget'] = OpenCustomFilteringOnSelect()
+        return super(MailboxAdmin, self).formfield_for_dbfield(db_field, **kwargs)
+    
     def get_fieldsets(self, request, obj=None):
         fieldsets = super(MailboxAdmin, self).get_fieldsets(request, obj)
         if obj and obj.filtering == obj.CUSTOM:
             # not collapsed filtering when exists
             fieldsets = copy.deepcopy(fieldsets)
-            fieldsets[1][1]['classes'] = fieldsets[0][1]['fields'] + ('open',)
+            fieldsets[1][1]['classes'] = fieldsets[0][1]['fields'] + ('collapse', 'open',)
         elif '_to_field' in parse_qs(request.META['QUERY_STRING']):
             # remove address from popup
             fieldsets = list(copy.deepcopy(fieldsets))
diff --git a/orchestra/contrib/mailboxes/backends.py b/orchestra/contrib/mailboxes/backends.py
index bf39d265..c9b1dcd2 100644
--- a/orchestra/contrib/mailboxes/backends.py
+++ b/orchestra/contrib/mailboxes/backends.py
@@ -1,4 +1,5 @@
 import logging
+import re
 import textwrap
 
 from django.core.exceptions import ObjectDoesNotExist
@@ -19,11 +20,13 @@ from .models import Address
 logger = logging.getLogger(__name__)
 
 
-class FilteringMixin(object):
+class SieveFilteringMixin(object):
     def generate_filter(self, mailbox, context):
         name, content = mailbox.get_filtering()
-        if name == 'REDIRECT':
-            self.append("doveadm mailbox create -u %(user)s Spam" % context)
+        for box in re.findall(r'fileinto\s+"([^"]+)"', content):
+            context['box'] = box
+            # TODO create mailbox without doveadm (not always installed)
+            self.append("doveadm mailbox create -u %(user)s %(box)s" % context)
         context['filtering_path'] = settings.MAILBOXES_SIEVE_PATH % context
         if content:
             context['filtering'] = ('# %(banner)s\n' + filtering) % context
@@ -33,7 +36,7 @@ class FilteringMixin(object):
             self.append("echo '' > %(filtering_path)s" % context)
 
 
-class UNIXUserMaildirBackend(FilteringMixin, ServiceController):
+class UNIXUserMaildirBackend(SieveFilteringMixin, ServiceController):
     """
     Assumes that all system users on this servers all mail accounts.
     If you want to have system users AND mailboxes on the same server you should consider using virtual mailboxes
@@ -94,7 +97,7 @@ class UNIXUserMaildirBackend(FilteringMixin, ServiceController):
         return replace(context, "'", '"')
 
 
-class DovecotPostfixPasswdVirtualUserBackend(FilteringMixin, ServiceController):
+class DovecotPostfixPasswdVirtualUserBackend(SieveFilteringMixin, ServiceController):
     """
     WARNING: This backends is not fully implemented
     """
diff --git a/orchestra/contrib/mailboxes/settings.py b/orchestra/contrib/mailboxes/settings.py
index a315719c..91d977e0 100644
--- a/orchestra/contrib/mailboxes/settings.py
+++ b/orchestra/contrib/mailboxes/settings.py
@@ -17,14 +17,14 @@ MAILBOXES_DOMAIN_MODEL = Setting('MAILBOXES_DOMAIN_MODEL', 'domains.Domain',
 
 
 MAILBOXES_HOME = Setting('MAILBOXES_HOME',
-    '/home/%(name)s/',
+    '/home/%(name)s',
     help_text="Available fromat names: <tt>%s</tt>" % ', '.join(_names),
     validators=[Setting.string_format_validator(_names)],
 )
 
 
 MAILBOXES_SIEVE_PATH = Setting('MAILBOXES_SIEVE_PATH',
-    os.path.join(MAILBOXES_HOME, 'Maildir/sieve/orchestra.sieve'),
+    os.path.join('%(home)s/Maildir/sieve/orchestra.sieve'),
     help_text="Available fromat names: <tt>%s</tt>" % ', '.join(_names),
     validators=[Setting.string_format_validator(_backend_names)],
 )
diff --git a/orchestra/contrib/mailboxes/widgets.py b/orchestra/contrib/mailboxes/widgets.py
new file mode 100644
index 00000000..ad92adc8
--- /dev/null
+++ b/orchestra/contrib/mailboxes/widgets.py
@@ -0,0 +1,33 @@
+import textwrap
+
+from django import forms
+
+
+class OpenCustomFilteringOnSelect(forms.Select):
+    def __init__(self, *args, **kwargs):
+        collapse = self.get_dynamic_collapse()
+        attrs = kwargs.get('attrs', {})
+        attrs.update({
+            'onClick': collapse,
+            'onChange': collapse,
+        })
+        attrs.update(kwargs.get('attrs', {}))
+        kwargs['attrs'] = attrs
+        super(OpenCustomFilteringOnSelect, self).__init__(*args, **kwargs)
+    
+    def get_dynamic_collapse(self):
+        return textwrap.dedent("""\
+            value = this.options[this.selectedIndex].value;
+            fieldset = $(this).closest("fieldset");
+            fieldset = $(".collapse");
+            if ( value == 'CUSTOM' ) {
+                if (fieldset.hasClass("collapsed")) {
+                    fieldset.removeClass("collapsed").trigger("show.fieldset", [$(this).attr("id")]);
+                }
+            } else {
+                if (! $(this).closest("fieldset").hasClass("collapsed")) {
+                    fieldset.addClass("collapsed").trigger("hide.fieldset", [$(this).attr("id")]);
+                }
+            }
+            """
+        )
diff --git a/orchestra/forms/options.py b/orchestra/forms/options.py
index ed908b5e..e81e68da 100644
--- a/orchestra/forms/options.py
+++ b/orchestra/forms/options.py
@@ -87,4 +87,3 @@ class ReadOnlyFormMixin(object):
                 if hasattr(self, 'instance'):
                     original = getattr(self.instance, name, original)
                 field.widget.original = original
-