diff --git a/Assets/Scripts/UI/Prefab/MainNav.cs b/Assets/Scripts/UI/Prefab/MainNav.cs
index 9643c586..1fdc9d16 100644
--- a/Assets/Scripts/UI/Prefab/MainNav.cs
+++ b/Assets/Scripts/UI/Prefab/MainNav.cs
@@ -107,6 +107,10 @@ public class MainNav : MonoBehaviour
     // Update is called once per frame
     void Update()
     {
+        if (App.hasNotRead != transform.Find("Mail/Dot").gameObject.activeInHierarchy)
+        {
+            ShowMailDot(App.hasNotRead, null);
+        }
 #if UNITY_ANDROID || UNITY_IOS
         if (delayTime < 0)
         {
diff --git a/Assets/Scripts/UI/Prefab/NewMainNav.cs b/Assets/Scripts/UI/Prefab/NewMainNav.cs
index b038b34f..179fd1d7 100644
--- a/Assets/Scripts/UI/Prefab/NewMainNav.cs
+++ b/Assets/Scripts/UI/Prefab/NewMainNav.cs
@@ -277,6 +277,10 @@ public class NewMainNav : MonoBehaviour
     // Update is called once per frame
     void Update()
     {
+        if (App.hasNotRead != transform.Find("Mail/Dot").gameObject.activeInHierarchy) 
+        {
+            ShowMailDot(App.hasNotRead, null);
+        }
         if (Input.touchCount > 0)
         {
             isTouch = true;