diff --git a/backend/out/linux_amd64/smail b/backend/out/linux_amd64/smail
index f0e7bd25..515d05b4 100644
Binary files a/backend/out/linux_amd64/smail and b/backend/out/linux_amd64/smail differ
diff --git a/frontend/src/views/EmailDetail/EmailDetail.js b/frontend/src/views/EmailDetail/EmailDetail.js
index ca1643e4..62ccd289 100644
--- a/frontend/src/views/EmailDetail/EmailDetail.js
+++ b/frontend/src/views/EmailDetail/EmailDetail.js
@@ -106,10 +106,25 @@ export function usePage() {
     return router.push({name: 'editer', query: {reply: String(id)}})
   }
   
+  const cleanSenderText = (text) => {
+    if (!text) return String();
+    return String(text).replace(/[\u200B-\u200D\u2060-\u206F\uFEFF]/g, String()).trim();
+  };
+
   const getInitial = (name) => {
-    if (!name) return '?';
-    return name.charAt(0).toUpperCase();
-  }
+    const cleaned = cleanSenderText(name);
+    if (!cleaned) return '?';
+    return cleaned.charAt(0).toUpperCase();
+  };
+
+  const formatSenderName = (fromName, fromAddress) => {
+    const cleaned = cleanSenderText(fromName);
+    return cleaned || fromAddress || String();
+  };
+
+  const hasSenderName = (fromName) => {
+    return cleanSenderText(fromName).length > 0;
+  };
   
   const formatDetailDate = (dateStr) => {
     if (!dateStr) return "";
@@ -183,6 +198,9 @@ export function usePage() {
     backToList,
     handleReply,
     getInitial,
+    cleanSenderText,
+    formatSenderName,
+    hasSenderName,
     formatDetailDate,
     handleDelete
   }
diff --git a/frontend/src/views/EmailDetail/EmailDetail.vue b/frontend/src/views/EmailDetail/EmailDetail.vue
index c954859b..cb4d4230 100644
--- a/frontend/src/views/EmailDetail/EmailDetail.vue
+++ b/frontend/src/views/EmailDetail/EmailDetail.vue
@@ -43,12 +43,12 @@
       <div class="mail-meta-card">
         <div class="meta-left">
           <div class="avatar-placeholder">
-            {{ getInitial(detailData.from_name || detailData.from_address) }}
+            {{ getInitial(formatSenderName(detailData.from_name, detailData.from_address)) }}
           </div>
           <div class="meta-info">
             <div class="sender-line">
-              <span class="sender-name">{{ detailData.from_name !== '' ? detailData.from_name : detailData.from_address }}</span>
-              <span class="sender-email" v-if="detailData.from_name !== ''">&lt;{{ detailData.from_address }}&gt;</span>
+              <span class="sender-name">{{ formatSenderName(detailData.from_name, detailData.from_address) }}</span>
+              <span class="sender-email" v-if="hasSenderName(detailData.from_name)">&lt;{{ detailData.from_address }}&gt;</span>
             </div>
             <div class="receivers-line">
               <span class="meta-label">{{ lang.to }}:</span>
@@ -117,6 +117,8 @@ const {
   ccs,
   showBCC,
   bccs,
+  formatSenderName,
+  hasSenderName,
   formatDetailDate
 } = usePage()
 </script>