diff --git a/src/ScadaLink.CentralUI/Components/Pages/Design/TransportExport.razor b/src/ScadaLink.CentralUI/Components/Pages/Design/TransportExport.razor
index 5995542..810d4a9 100644
--- a/src/ScadaLink.CentralUI/Components/Pages/Design/TransportExport.razor
+++ b/src/ScadaLink.CentralUI/Components/Pages/Design/TransportExport.razor
@@ -126,6 +126,11 @@
             <fieldset class="mb-4" data-testid="group-notification-lists">
                 <legend class="h6">Notification Lists</legend>
                 @RenderCheckboxList(_notificationLists, n => n.Id, n => n.Name, _selectedNotificationLists)
+                <div class="alert alert-info small mt-2 mb-0 py-2" role="alert" data-testid="smtp-hint">
+                    Selecting a notification list does <strong>not</strong> automatically include its
+                    SMTP configuration. SMTP configurations are environment-specific and must be
+                    selected separately if you want them in the bundle.
+                </div>
             </fieldset>
 
             <fieldset class="mb-4" data-testid="group-smtp-configs">