diff --git a/apps/perms/api/user_group_permission.py b/apps/perms/api/user_group_permission.py
index 159f76a39..841a82096 100644
--- a/apps/perms/api/user_group_permission.py
+++ b/apps/perms/api/user_group_permission.py
@@ -93,19 +93,12 @@ class UserGroupGrantedNodesWithAssetsAsTreeApi(ListAPIView):
     show_assets = True
     system_user_id = None
 
-    def change_org_if_need(self):
-        if self.request.user.is_superuser or \
-                self.request.user.is_app or \
-                self.kwargs.get('pk') is None:
-            set_to_root_org()
-
     def get(self, request, *args, **kwargs):
         self.show_assets = request.query_params.get('show_assets', '1') == '1'
         self.system_user_id = request.query_params.get('system_user')
         return super().get(request, *args, **kwargs)
 
     def get_queryset(self):
-        self.change_org_if_need()
         user_group_id = self.kwargs.get('pk', '')
         queryset = []
         group = get_object_or_404(UserGroup, id=user_group_id)
diff --git a/apps/perms/api/user_permission.py b/apps/perms/api/user_permission.py
index b4f8fc07e..c4e86f4bd 100644
--- a/apps/perms/api/user_permission.py
+++ b/apps/perms/api/user_permission.py
@@ -25,7 +25,9 @@ from ..hands import (
     NodeSerializer, RemoteAppSerializer,
 )
 from .. import serializers, const
-from ..mixins import AssetsFilterMixin, RemoteAppFilterMixin
+from ..mixins import (
+    AssetsFilterMixin, RemoteAppFilterMixin, ChangeOrgIfNeedMixin
+)
 from ..models import Action
 
 logger = get_logger(__name__)
@@ -460,7 +462,7 @@ class GetUserAssetPermissionActionsApi(UserPermissionCacheMixin, APIView):
 
 # RemoteApp permission
 
-class UserGrantedRemoteAppsApi(RemoteAppFilterMixin, ListAPIView):
+class UserGrantedRemoteAppsApi(ChangeOrgIfNeedMixin, RemoteAppFilterMixin, ListAPIView):
     permission_classes = (IsOrgAdminOrAppUser,)
     serializer_class = RemoteAppSerializer
     pagination_class = LimitOffsetPagination
@@ -485,7 +487,7 @@ class UserGrantedRemoteAppsApi(RemoteAppFilterMixin, ListAPIView):
         return super().get_permissions()
 
 
-class UserGrantedRemoteAppsAsTreeApi(ListAPIView):
+class UserGrantedRemoteAppsAsTreeApi(ChangeOrgIfNeedMixin, ListAPIView):
     serializer_class = TreeNodeSerializer
     permission_classes = (IsOrgAdminOrAppUser,)
 
@@ -517,10 +519,11 @@ class UserGrantedRemoteAppsAsTreeApi(ListAPIView):
         return super().get_permissions()
 
 
-class ValidateUserRemoteAppPermissionApi(APIView):
+class ValidateUserRemoteAppPermissionApi(ChangeOrgIfNeedMixin, APIView):
     permission_classes = (IsOrgAdminOrAppUser,)
 
     def get(self, request, *args, **kwargs):
+        self.change_org_if_need(request, kwargs)
         user_id = request.query_params.get('user_id', '')
         remote_app_id = request.query_params.get('remote_app_id', '')
         user = get_object_or_404(User, id=user_id)
diff --git a/apps/perms/mixins.py b/apps/perms/mixins.py
index f302285a6..f1d7fac1e 100644
--- a/apps/perms/mixins.py
+++ b/apps/perms/mixins.py
@@ -1,9 +1,10 @@
 # ~*~ coding: utf-8 ~*~
 #
 
+from orgs.utils import set_to_root_org
 
 __all__ = [
-    'AssetsFilterMixin', 'RemoteAppFilterMixin',
+    'AssetsFilterMixin', 'RemoteAppFilterMixin', 'ChangeOrgIfNeedMixin',
 ]
 
 
@@ -100,3 +101,17 @@ class RemoteAppFilterMixin(object):
             queryset, key=lambda x: getattr(x, order_by), reverse=reverse
         )
         return queryset
+
+
+class ChangeOrgIfNeedMixin(object):
+
+    @staticmethod
+    def change_org_if_need(request, kwargs):
+        if request.user.is_authenticated and request.user.is_superuser \
+                or request.user.is_app \
+                or kwargs.get('pk') is None:
+            set_to_root_org()
+
+    def get(self, request, *args, **kwargs):
+        self.change_org_if_need(request, kwargs)
+        return super().get(request, *args, **kwargs)
diff --git a/apps/settings/api.py b/apps/settings/api.py
index d399d207c..37d63bef1 100644
--- a/apps/settings/api.py
+++ b/apps/settings/api.py
@@ -39,7 +39,7 @@ class MailTestingAPI(APIView):
                 subject = "Test"
                 message = "Test smtp setting"
                 email_from = email_from or email_host_user
-                send_mail(subject, message,  email_from, [email_host_user])
+                send_mail(subject, message,  email_from, [email_from])
             except Exception as e:
                 return Response({"error": str(e)}, status=401)