diff --git a/UI/MailboxFrame.lua b/UI/MailboxFrame.lua
index 5b84e87..f1da651 100644
--- a/UI/MailboxFrame.lua
+++ b/UI/MailboxFrame.lua
@@ -17,8 +17,13 @@ local mailboxClickCatcher = nil
 
 -- OnLoad
 function Guda_MailboxFrame_OnLoad(self)
+    -- Apply border visibility setting
+    if MailboxFrame.UpdateBorderVisibility then
+        MailboxFrame:UpdateBorderVisibility()
+    end
+
     -- Set up initial backdrop
-    addon:ApplyBackdrop(self, "DEFAULT_FRAME")
+    -- (No longer needed here as UpdateBorderVisibility handles it)
 
     -- Set up search box placeholder
     local searchBox = getglobal(self:GetName().."_SearchBar_SearchBox")
@@ -53,6 +58,11 @@ end
 
 -- OnShow
 function Guda_MailboxFrame_OnShow(self)
+    -- Apply border visibility setting
+    if MailboxFrame.UpdateBorderVisibility then
+        MailboxFrame:UpdateBorderVisibility()
+    end
+
     -- Apply frame transparency
     if Guda_ApplyBackgroundTransparency then
         Guda_ApplyBackgroundTransparency()
@@ -61,6 +71,16 @@ function Guda_MailboxFrame_OnShow(self)
     MailboxFrame:Update()
 end
 
+-- Update border visibility
+function MailboxFrame:UpdateBorderVisibility()
+    local hideBorders = addon.Modules.DB:GetSetting("hideBorders")
+    if hideBorders then
+        Guda:ApplyBackdrop(Guda_MailboxFrame, "MINIMALIST_BORDER", "DEFAULT")
+    else
+        Guda:ApplyBackdrop(Guda_MailboxFrame, "DEFAULT_FRAME", "DEFAULT")
+    end
+end
+
 -- OnHide
 function Guda_MailboxFrame_OnHide(self)
     -- Close any open dropdown menus when the mailbox frame is hidden
diff --git a/UI/MailboxFrame.xml b/UI/MailboxFrame.xml
index 8c9e87c..9975466 100644
--- a/UI/MailboxFrame.xml
+++ b/UI/MailboxFrame.xml
@@ -136,26 +136,31 @@
             </Button>
 
             <!-- Search Bar -->
-            <Frame name="$parent_SearchBar" inherits="OptionFrameBoxTemplate">
+            <Frame name="$parent_SearchBar">
                 <Size>
-                    <AbsDimension x="250" y="32"/>
+                    <AbsDimension x="350" y="30"/>
                 </Size>
                 <Anchors>
                     <Anchor point="TOPLEFT">
                         <Offset>
-                            <AbsDimension x="20" y="-35"/>
+                            <AbsDimension x="20" y="-40"/>
                         </Offset>
                     </Anchor>
                 </Anchors>
                 <Frames>
                     <EditBox name="$parent_SearchBox" autoFocus="false" inherits="InputBoxTemplate">
                         <Size>
-                            <AbsDimension x="235" y="20"/>
+                            <AbsDimension x="0" y="20"/>
                         </Size>
                         <Anchors>
                             <Anchor point="LEFT">
                                 <Offset>
-                                    <AbsDimension x="10" y="0"/>
+                                    <AbsDimension x="16" y="0"/>
+                                </Offset>
+                            </Anchor>
+                            <Anchor point="RIGHT">
+                                <Offset>
+                                    <AbsDimension x="-10" y="0"/>
                                 </Offset>
                             </Anchor>
                         </Anchors>
@@ -190,12 +195,6 @@
                         </Scripts>
                     </EditBox>
                 </Frames>
-                <Scripts>
-                    <OnLoad>
-                        this:SetBackdropBorderColor(0.4, 0.4, 0.4)
-                        this:SetBackdropColor(0.15, 0.15, 0.15, 0.5)
-                    </OnLoad>
-                </Scripts>
             </Frame>
 
             <!-- Character Selection Button -->
diff --git a/UI/SettingsPopup.lua b/UI/SettingsPopup.lua
index 56f4030..a57b499 100644
--- a/UI/SettingsPopup.lua
+++ b/UI/SettingsPopup.lua
@@ -368,7 +368,7 @@ function Guda_ApplyBackgroundTransparency()
     local transparency = Guda.Modules.DB:GetSetting("bgTransparency") or 0.15
     local alpha = 1.0 - transparency
     
-    local frames = { "Guda_BagFrame", "Guda_BankFrame", "Guda_SettingsPopup", "Guda_QuestItemBar" }
+    local frames = { "Guda_BagFrame", "Guda_BankFrame", "Guda_MailboxFrame", "Guda_SettingsPopup", "Guda_QuestItemBar" }
     for _, frameName in ipairs(frames) do
         local frame = getglobal(frameName)
         if frame then
@@ -603,6 +603,15 @@ function Guda_SettingsPopup_HideBordersCheckbox_OnClick(self)
         end
     end
 
+    local mailboxFrame = getglobal("Guda_MailboxFrame")
+    if mailboxFrame then
+        if isChecked then
+            Guda:ApplyBackdrop(mailboxFrame, "MINIMALIST_BORDER", "DEFAULT")
+        else
+            Guda:ApplyBackdrop(mailboxFrame, "DEFAULT_FRAME", "DEFAULT")
+        end
+    end
+
     -- Update border visibility on settings frame
     if SettingsPopup.UpdateBorderVisibility then
         SettingsPopup:UpdateBorderVisibility()