diff --git a/Assets/mailSystem/mailSlotPrefab.cs b/Assets/mailSystem/mailSlotPrefab.cs
index 7d1c2244..4813e514 100644
--- a/Assets/mailSystem/mailSlotPrefab.cs
+++ b/Assets/mailSystem/mailSlotPrefab.cs
@@ -100,21 +100,6 @@ public class mailSlotPrefab : MonoBehaviour
             return;
         }
 
-        if (!url.StartsWith("http://", System.StringComparison.OrdinalIgnoreCase)
-            && !url.StartsWith("https://", System.StringComparison.OrdinalIgnoreCase))
-        {
-            NetworkManager network = NetworkManager.Instance;
-            if (network != null && !string.IsNullOrWhiteSpace(network.ServerUrl))
-            {
-                string baseUrl = network.ServerUrl.TrimEnd('/');
-                if (!url.StartsWith("/"))
-                {
-                    url = "/" + url;
-                }
-                url = baseUrl + url;
-            }
-        }
-
         if (RewardPreviewCache.TryGetValue(url, out Sprite cachedSprite) && cachedSprite != null)
         {
             icon.sprite = cachedSprite;