diff --git a/apps/billing/quotas.py b/apps/billing/quotas.py
new file mode 100644
index 0000000..b61d7f1
--- /dev/null
+++ b/apps/billing/quotas.py
@@ -0,0 +1,12 @@
+from common.apps.billing.constants import FeatureCode, FeatureUsageScope
+from common.apps.billing.mixins import BaseQuota
+
+
+class WhitelabelQuota(BaseQuota):
+    reserve_actions = set()
+    rules = {
+        ("create", "update", "partial_update", "destroy"): {
+            "feature": FeatureCode.WHITELABEL_ENABLED,
+            "scope": FeatureUsageScope.ORGANIZATION,
+        },
+    }
diff --git a/apps/billing/services/quota_service.py b/apps/billing/services/quota_service.py
new file mode 100644
index 0000000..cb4ad86
--- /dev/null
+++ b/apps/billing/services/quota_service.py
@@ -0,0 +1,52 @@
+from apps.billing.services.subscription import release_quota, reserve_quota
+from apps.organization.models import Organization
+
+
+class BillingQuotaService:
+    allow_missing_organization = False
+
+    def _get_organization(self, organization_slug):
+        return Organization.objects.filter(slug_name=organization_slug).first()
+
+    def reserve_quota(
+        self,
+        organization_slug,
+        feature,
+        amount=1,
+        scope_type=None,
+        scope_id=None,
+    ):
+        organization = self._get_organization(organization_slug)
+        if organization is None:
+            return False, "Organization context required."
+
+        return reserve_quota(
+            organization,
+            feature,
+            amount,
+            scope_type=scope_type,
+            scope_id=scope_id,
+        )
+
+    def release_quota(
+        self,
+        organization_slug,
+        feature,
+        amount=1,
+        scope_type=None,
+        scope_id=None,
+    ):
+        organization = self._get_organization(organization_slug)
+        if organization is None:
+            return None
+
+        return release_quota(
+            organization,
+            feature,
+            amount,
+            scope_type=scope_type,
+            scope_id=scope_id,
+        )
+
+
+billing_quota_service = BillingQuotaService()
diff --git a/apps/custom_email/views.py b/apps/custom_email/views.py
index 4541749..e5d8cb2 100644
--- a/apps/custom_email/views.py
+++ b/apps/custom_email/views.py
@@ -1,15 +1,17 @@
+from common.apps.billing.mixins import QuotaMixin
 from common.pagination.base_pagination import BasePagination
 from django.db.models import Prefetch
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter
 
+from apps.billing.quotas import WhitelabelQuota
 from apps.custom_email.models import OrganizationEmail
 from apps.custom_email.serializers import OrganizationEmailSerializer
 from apps.organization_setting.models import OrganizationTheme
 from utils.views import OrganizationListAPIView
 
 
-class ListCustomEmailView(OrganizationListAPIView):
+class ListCustomEmailView(QuotaMixin, OrganizationListAPIView):
     serializer_class = OrganizationEmailSerializer
     queryset = OrganizationEmail.objects.select_related(
         "organization",
@@ -25,3 +27,4 @@ class ListCustomEmailView(OrganizationListAPIView):
     filterset_fields = ["email_type"]
     filter_backends = [DjangoFilterBackend, OrderingFilter]
     ordering = ["-created_at"]
+    quota_classes = [WhitelabelQuota]
diff --git a/apps/custom_page/views.py b/apps/custom_page/views.py
index faea208..58f99d8 100644
--- a/apps/custom_page/views.py
+++ b/apps/custom_page/views.py
@@ -1,16 +1,19 @@
+from common.apps.billing.mixins import QuotaMixin
 from common.pagination.base_pagination import BasePagination
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework.filters import OrderingFilter
 
+from apps.billing.quotas import WhitelabelQuota
 from apps.custom_page.models import CustomPage
 from apps.custom_page.serializers import CustomPageSerializer
 from utils.views import OrganizationListAPIView
 
 
-class ListCustomPageView(OrganizationListAPIView):
+class ListCustomPageView(QuotaMixin, OrganizationListAPIView):
     serializer_class = CustomPageSerializer
     queryset = CustomPage.objects.select_related("organization").all()
     organization_field = "organization"
     pagination_class = BasePagination
     filter_backends = [DjangoFilterBackend, OrderingFilter]
     ordering = ["-created_at"]
+    quota_classes = [WhitelabelQuota]
diff --git a/apps/organization_setting/views.py b/apps/organization_setting/views.py
index 54fcf40..e8be844 100644
--- a/apps/organization_setting/views.py
+++ b/apps/organization_setting/views.py
@@ -1,7 +1,9 @@
+from common.apps.billing.mixins import QuotaMixin
 from django.shortcuts import get_object_or_404
 from rest_framework import generics
 from rest_framework.response import Response
 
+from apps.billing.quotas import WhitelabelQuota
 from apps.organization.models import Organization
 from apps.organization_setting.models import OrganizationSetting
 from apps.organization_setting.serializers import (
@@ -10,7 +12,7 @@
 )
 
 
-class UpdateOrganizationSettingView(generics.UpdateAPIView):
+class UpdateOrganizationSettingView(QuotaMixin, generics.UpdateAPIView):
     serializer_class = UpdateOrganizationSettingSerializer
     queryset = OrganizationSetting.objects.select_related(
         "organization"
@@ -19,6 +21,7 @@ class UpdateOrganizationSettingView(generics.UpdateAPIView):
         "organization__organization_custom_emails",
         "organization__organization_custom_page",
     )
+    quota_classes = [WhitelabelQuota]
 
     def get_object(self):
         organization = get_object_or_404(
diff --git a/bootstrap_service/settings.py b/bootstrap_service/settings.py
index f279c5e..932e865 100644
--- a/bootstrap_service/settings.py
+++ b/bootstrap_service/settings.py
@@ -243,6 +243,8 @@ def silky_intercept_func(request):
 EMAIL_HOST_USER = os.getenv("EMAIL_HOST_USER", "")
 EMAIL_HOST_PASSWORD = os.getenv("EMAIL_HOST_PASSWORD", "")
 
+BILLING_QUOTA_SERVICE = "apps.billing.services.quota_service.billing_quota_service"
+
 # Inbox that receives contact-sales requests for manual follow-up.
 SALES_CONTACT_EMAIL = os.getenv("SALES_CONTACT_EMAIL", "sales@spacedf.com")