function comment_mail_notify($comment_id) {
 $comment = get_comment($comment_id);
 $parent_id = $comment->comment_parent ? $comment->comment_parent : '';
 $spam_confirmed = $comment->comment_approved;
 if (($parent_id != '') && ($spam_confirmed != 'spam')) {
 $wp_email = 'no-reply@' . preg_replace('#^www\.#', '', strtolower($_SERVER['SERVER_NAME'])); //e-mail 發出點, no-reply 可改為可用的 e-mail.
 $to = trim(get_comment($parent_id)->comment_author_email);
 $subject = '你在 ' . htmlspecialchars_decode(get_option('blogname'), ENT_QUOTES) .' 的留言有了新回复';
 $message = '
 <div style="background: #F1F1F1;width: 100%;padding: 50px 0;">
 <div style="background: #FFF;width: 750px;margin: 0 auto;">
 <div style="padding: 10px 60px;background: #50A5E6;color: #FFF;font-size: 24px; font-weight: bold;"><a href="' . get_option('home') . '" style="text-decoration: none;color: #FFF;">' . htmlspecialchars_decode(get_option('blogname'), ENT_QUOTES) . '</a></div>
 <h1 style="text-align: center;font-size: 26px;line-height: 50px;margin: 30px 60px;font-weight: bold;font-family: 宋体,微软雅黑,serif;">
 你在 [' . htmlspecialchars_decode(get_option('blogname'), ENT_QUOTES) . '] 的留言有了新回复
 </h1>
 <div style="border-bottom: 1px solid #333;height: 0px;margin: 0 60px;"></div>
 <div style="margin: 30px 60px;color: #363636;">
 <p style="font-size: 16px;font-weight: bold;line-height: 30px;">Hi，' . trim(get_comment($parent_id)->comment_author) . '！</p>
 <div style="font-size: 16px;">
 <p><strong>你曾在本博客《' . get_the_title($comment->comment_post_ID) . '》的留言为：</strong></p>
 <blockquote style="border-left: 4px solid #ddd; padding: 5px 10px; line-height: 22px;">' . trim(get_comment($parent_id)->comment_content) . '</blockquote>
 </div>
 <div style="font-size: 16px;">
 <p><strong>' . trim($comment->comment_author) . ' 给你的回复为：</strong></p>
 <blockquote style="border-left: 4px solid #ddd; padding: 5px 10px; line-height: 22px;">' . trim($comment->comment_content) . ' </blockquote>
 </div>
 <p style="font-size: 16px;line-height: 30px;">
 你可以点击此链接 <a href="' . htmlspecialchars(get_comment_link($parent_id)) . '" style="text-decoration: none;color: #50A5E6;">查看完整回复内容</a> | 欢迎再次来访 <a href="' . get_option('home') . '" style="text-decoration: none;color: #50A5E6;">' . htmlspecialchars_decode(get_option('blogname'), ENT_QUOTES) . '</a>
 </p>
 <p style="color: #999;">(此邮件由系统自动发出，请勿回复！)</p>
 </div>
 <div style="border-bottom: 1px solid #dfdfdf;height: 0px;margin: 0 60px;"></div>
 <div style="text-align: right;padding: 30px 60px;color: #999;">
 <p>Powered by ' . htmlspecialchars_decode(get_option('blogname'), ENT_QUOTES) .'</p>
 </div>
 </div>
 </div>';

$from = "From: \"" . htmlspecialchars_decode(get_option('blogname'), ENT_QUOTES) . "\" <$wp_email>";
 $headers = "$from\nContent-Type: text/html; charset=" . get_option('blog_charset') . "\n";
 wp_mail( $to, $subject, $message, $headers );
 }
}
add_action('comment_post', 'comment_mail_notify');