diff --git a/frontend/vue.config.js b/frontend/vue.config.js
index 3ceebaec0..c0e75e1bc 100644
--- a/frontend/vue.config.js
+++ b/frontend/vue.config.js
@@ -5,7 +5,7 @@ module.exports = {
         target:
           process.env.DOCKER == "yes"
             ? "http://api:8000/"
-            : "http://localhost:8000",
+            : "http://127.0.0.1:8000",
       },
     },
   },
diff --git a/modoboa/core/api/v2/serializers.py b/modoboa/core/api/v2/serializers.py
index 7afaff798..f766fd6ce 100644
--- a/modoboa/core/api/v2/serializers.py
+++ b/modoboa/core/api/v2/serializers.py
@@ -159,6 +159,7 @@ class CoreGlobalParametersSerializer(serializers.Serializer):
     send_statistics = serializers.BooleanField(default=True)
 
     # Misc settings
+    enable_inactive_accounts = serializers.BooleanField(default=True)
     inactive_account_threshold = serializers.IntegerField(default=30)
     top_notifications_check_interval = serializers.IntegerField(default=30)
     log_maximum_age = serializers.IntegerField(default=365)
diff --git a/modoboa/core/api/v2/tests.py b/modoboa/core/api/v2/tests.py
index 4caae77f7..079437e92 100644
--- a/modoboa/core/api/v2/tests.py
+++ b/modoboa/core/api/v2/tests.py
@@ -59,6 +59,7 @@ CORE_SETTINGS = {
     "send_new_versions_email": False,
     "new_versions_email_rcpt": "postmaster@yourdomain.test",
     "send_statistics": True,
+    "enable_inactive_accounts": True,
     "inactive_account_threshold": 30,
     "top_notifications_check_interval": 30,
     "log_maximum_age": 365,
diff --git a/modoboa/core/app_settings.py b/modoboa/core/app_settings.py
index 5a1fcdc5a..46e83ee7d 100644
--- a/modoboa/core/app_settings.py
+++ b/modoboa/core/app_settings.py
@@ -455,6 +455,14 @@ class GeneralParametersForm(param_forms.AdminParametersForm):
 
     sep3 = SeparatorField(label=ugettext_lazy("Miscellaneous"))
 
+    enable_inactive_accounts = YesNoField(
+        label=_("Enable inactive account tracking"),
+        initial=True,
+        help_text=_("Allow the administrator to set a threshold (in days) "
+                    "beyond which an account is considered inactive "
+                    "if the user hasn't logged in")
+        )
+
     inactive_account_threshold = forms.IntegerField(
         label=_("Inactive account threshold"),
         initial=30,
@@ -518,6 +526,7 @@ class GeneralParametersForm(param_forms.AdminParametersForm):
         "send_new_versions_email": "check_new_versions=True",
         "new_versions_email_rcpt": "check_new_versions=True",
         "sms_provider": "sms_password_recovery=True",
+        "inactive_account_threshold": "enable_inactive_accounts=True"
     }
 
     def __init__(self, *args, **kwargs):
@@ -1070,8 +1079,17 @@ GLOBAL_PARAMETERS_STRUCT = collections.OrderedDict([
     ("misc", {
         "label": ugettext_lazy("Miscellaneous"),
         "params": collections.OrderedDict([
+             ("enable_inactive_accounts", {
+                "label": ugettext_lazy("Enable inactive account tracking"),
+                "help_text": ugettext_lazy(
+                    "Allow the administrator to set a threshold (in days) "
+                    "beyond which an account is considered inactive "
+                    "if the user hasn't logged in"
+                    ),
+            }),
             ("inactive_account_threshold", {
                 "label": ugettext_lazy("Inactive account threshold"),
+                "display": "enable_inactive_accounts=true",
                 "help_text": ugettext_lazy(
                     "An account with a last login date greater than this "
                     "threshold (in days) will be considered as inactive"
diff --git a/modoboa/core/management/commands/clean_inactive_accounts.py b/modoboa/core/management/commands/clean_inactive_accounts.py
index eb5e58778..2c48e4754 100644
--- a/modoboa/core/management/commands/clean_inactive_accounts.py
+++ b/modoboa/core/management/commands/clean_inactive_accounts.py
@@ -43,6 +43,12 @@ class Command(BaseCommand):
 
     def handle(self, *args, **options):
         """Command entry point."""
+        if not param_tools.get_global_parameter(
+                "enable_inactive_accounts"):
+            if options["verbose"]:
+                print("Inactive accounts detection is disabled.",
+                      file=self.stdout)
+            return
         inactive_account_threshold = param_tools.get_global_parameter(
             "inactive_account_threshold")
         qset = models.User.objects.filter(
diff --git a/modoboa/core/tests/test_core.py b/modoboa/core/tests/test_core.py
index b0b476bc2..ef7b99688 100644
--- a/modoboa/core/tests/test_core.py
+++ b/modoboa/core/tests/test_core.py
@@ -11,7 +11,7 @@ from django.test import TestCase
 from django.urls import reverse
 from django.utils import timezone
 
-from modoboa.lib.tests import ModoTestCase
+from modoboa.lib.tests import ModoTestCase, SimpleModoTestCase
 from .. import factories, mocks, models
 
 
@@ -44,7 +44,7 @@ class AuthenticationTestCase(ModoTestCase):
         self.assertTrue(response.url.endswith(reverse("core:dashboard")))
 
 
-class ManagementCommandsTestCase(TestCase):
+class ManagementCommandsTestCase(SimpleModoTestCase):
     """Test management commands."""
 
     def test_change_default_admin(self):
@@ -84,6 +84,15 @@ class ManagementCommandsTestCase(TestCase):
             "clean_inactive_accounts", "--verbose", "--dry-run", stdout=out)
         self.assertIn("user1@domain.test", out.getvalue())
 
+        # Disable account account threshold
+        self.set_global_parameter("enable_inactive_accounts", False)
+        out = StringIO()
+        management.call_command(
+            "clean_inactive_accounts", "--verbose", stdout=out)
+        self.assertIn("Inactive accounts detection is disabled.",
+                      out.getvalue())
+
+        self.set_global_parameter("enable_inactive_accounts", True)
         management.call_command("clean_inactive_accounts", "--silent")
         account.refresh_from_db()
         self.assertFalse(account.is_active)
diff --git a/modoboa/core/tests/test_views.py b/modoboa/core/tests/test_views.py
index 5920fac6d..d2d5572ef 100644
--- a/modoboa/core/tests/test_views.py
+++ b/modoboa/core/tests/test_views.py
@@ -60,6 +60,7 @@ SETTINGS_SAMPLE = {
     "core-default_password": "Toto1000",
     "limits-deflt_user_quota_limit": "0",
     "core-hide_features_widget": "False",
+    "core-enable_inactive_accounts": "True",
     "core-inactive_account_threshold": "30",
     "admin-domains_must_have_authorized_mx": False,
     "core-random_password_length": "8",
diff --git a/modoboa/lib/tests/__init__.py b/modoboa/lib/tests/__init__.py
index eda6d56bf..f37024fab 100644
--- a/modoboa/lib/tests/__init__.py
+++ b/modoboa/lib/tests/__init__.py
@@ -52,6 +52,9 @@ class ParametersMixin(object):
         self.localconfig.parameters.set_values(parameters, app=app)
         self.localconfig.save()
 
+class SimpleModoTestCase(ParametersMixin, TestCase):
+    """Simple class to add parameters editing."""
+
 
 class ModoTestCase(ParametersMixin, TestCase):
     """All test cases must inherit from this one."""
diff --git a/modoboa/parameters/tools.py b/modoboa/parameters/tools.py
index cda90ba1e..54e3eaff5 100644
--- a/modoboa/parameters/tools.py
+++ b/modoboa/parameters/tools.py
@@ -63,7 +63,7 @@ class Registry(object):
         result = [{"name": key, "label": value["label"]}
                   for key, value in self._registry2[level].items()]
         return result
-    
+
     def get_label(self, level, app):
         return self._registry2[level][app]["label"]
 
diff --git a/modoboa/pdfcredentials/api/v2/views.py b/modoboa/pdfcredentials/api/v2/views.py
index d92955ac4..5d2345fce 100644
--- a/modoboa/pdfcredentials/api/v2/views.py
+++ b/modoboa/pdfcredentials/api/v2/views.py
@@ -9,6 +9,7 @@ from rest_framework import permissions
 from rest_framework.views import APIView
 
 from modoboa.admin.models import Domain
+from modoboa.lib.throttle import UserLesserDdosUser
 
 from .serializers import GetAccountCredentialsSerializer
 
@@ -22,6 +23,7 @@ class PDFCredentialView(APIView):
     )
 
     serializer_class = GetAccountCredentialsSerializer
+    throttle_classes = [UserLesserDdosUser]
 
     def get_queryset(self):
         """Filter queryset based on current user."""