diff --git a/adm/mail_list.php b/adm/mail_list.php
index 31963b835..3611c017e 100644
--- a/adm/mail_list.php
+++ b/adm/mail_list.php
@@ -36,7 +36,7 @@ $colspan = 6;
 </caption>
 <thead>
 <tr>
-    <th scope="col">ID</th>
+    <th scope="col">번호</th>
     <th scope="col">제목</th>
     <th scope="col">작성일시</th>
     <th scope="col">테스트</th>
diff --git a/adm/mail_preview.php b/adm/mail_preview.php
index b4853ef45..535a14aa6 100644
--- a/adm/mail_preview.php
+++ b/adm/mail_preview.php
@@ -5,12 +5,30 @@ include_once($g4['path'].'/lib/mailer.lib.php');
 
 auth_check($auth[$sub_menu], 'r');
 
-$se = sql_fetch("select ma_subject, ma_content from {$g4['mail_table']} where ma_id = '$ma_id' ");
+$se = sql_fetch("select ma_subject, ma_content from {$g4['mail_table']} where ma_id = '{$ma_id}' ");
 
 $subject = $se['ma_subject'];
 $content = $se['ma_content'] . "<hr size=0><p><span style='font-size:9pt; font-family:굴림'>▶ 더 이상 정보 수신을 원치 않으시면 [<a href='{$g4['url']}/{$g4['bbs']}/email_stop.php?mb_id=***&amp;mb_md5=***' target='_blank'>수신거부</a>] 해 주십시오.</span></p>";
+?>
 
-echo "<span style='font-size:9pt;'>$subject</span>";
-echo "<hr size=0>";
-echo $content;
-?>
\ No newline at end of file
+<!doctype html>
+<html lang="ko">
+<head>
+<meta charset="utf-8">
+<title>그누보드 메일발송 테스트</title>
+</head>
+
+<body>
+
+<h1><?=$subject?></h1>
+
+<p>
+    <?=$se['ma_content']?>
+</p>
+
+<p>
+    <strong>주의!</strong> 이 화면에 보여지는 디자인은 실제 내용이 발송되었을 때 디자인과 다를 수 있습니다.
+</p>
+
+</body>
+</html>
\ No newline at end of file