diff --git a/admin/integrations.php b/admin/integrations.php
index f7872aa..23dde39 100644
--- a/admin/integrations.php
+++ b/admin/integrations.php
@@ -28,6 +28,10 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['save'])) {
         $db->setSetting('captcha_mode',         $cm);
         $db->setSetting('captcha_site_key',     trim($_POST['captcha_site_key'] ?? ''));
         if (!empty($_POST['captcha_secret'])) { $db->setSetting('captcha_secret', trim($_POST['captcha_secret'])); }
+        $db->setSetting('sms_enabled',  isset($_POST['sms_enabled']) ? '1' : '0');
+        $db->setSetting('twilio_sid',   trim($_POST['twilio_sid'] ?? ''));
+        $db->setSetting('twilio_from',  trim($_POST['twilio_from'] ?? ''));
+        if (!empty($_POST['twilio_token'])) { $db->setSetting('twilio_token', trim($_POST['twilio_token'])); }
         $db->setSetting('user_daily_voucher_limit', max(0, (int)($_POST['user_daily_voucher_limit'] ?? 0)));
         $db->setSetting('trusted_proxy',        trim($_POST['trusted_proxy'] ?? ''));
         $db->setSetting('webhook_enabled',      isset($_POST['webhook_enabled']) ? '1' : '0');
@@ -49,6 +53,10 @@ $enforce2fa        = $db->getSetting('enforce_2fa_admins', '0') === '1';
 $captchaMode       = $db->getSetting('captcha_mode', 'off');
 $captchaSiteKey    = $db->getSetting('captcha_site_key', '');
 $captchaSecretSet  = $db->getSetting('captcha_secret', '') !== '';
+$smsEnabled        = $db->getSetting('sms_enabled', '0') === '1';
+$twilioSid         = $db->getSetting('twilio_sid', '');
+$twilioFrom        = $db->getSetting('twilio_from', '');
+$twilioTokenSet    = $db->getSetting('twilio_token', '') !== '';
 $dailyLimit        = (int)$db->getSetting('user_daily_voucher_limit', 0);
 $trustedProxy      = $db->getSetting('trusted_proxy', '');
 $webhookEnabled    = $db->getSetting('webhook_enabled', '0') === '1';
@@ -126,6 +134,17 @@ label { display:block; font-size:14px; color:var(--text-secondary); margin:14px
     </div>
 </div>
 
+<div class="card">
+    <h2>SMS-Versand (Twilio)</h2>
+    <p class="muted">Voucher-Codes optional per SMS versenden. Erfordert ein Twilio-Konto.</p>
+    <label class="chk"><input type="checkbox" name="sms_enabled" <?= $smsEnabled ? 'checked' : '' ?>> SMS-Versand aktiv</label>
+    <div class="row3" style="margin-top:10px;">
+        <div><label>Account SID</label><input class="input" type="text" name="twilio_sid" value="<?= htmlspecialchars($twilioSid) ?>"></div>
+        <div><label>Auth Token<?= $twilioTokenSet ? ' (gesetzt)' : '' ?></label><input class="input" type="password" name="twilio_token" placeholder="<?= $twilioTokenSet ? '••••••• (leer = unverändert)' : '' ?>"></div>
+        <div><label>Absender (From)</label><input class="input" type="text" name="twilio_from" value="<?= htmlspecialchars($twilioFrom) ?>" placeholder="+49…"></div>
+    </div>
+</div>
+
 <div class="card">
     <h2>Datenhaltung & Cleanup (DSGVO)</h2>
     <p class="muted">Aufbewahrungsfristen in Tagen (0 = deaktiviert). Ausführung per <code>cron_cleanup.php</code> (täglich empfohlen).
diff --git a/includes/Sms.php b/includes/Sms.php
new file mode 100644
index 0000000..c055c71
--- /dev/null
+++ b/includes/Sms.php
@@ -0,0 +1,42 @@
+<?php
+/**
+ * Sms – Versand von Voucher-Codes per SMS über Twilio.
+ *
+ * Settings: sms_enabled (0/1), twilio_sid, twilio_token, twilio_from
+ * Reine PHP-Standardlib + cURL. Fehler werden geloggt, nie geworfen.
+ */
+class Sms {
+    public static function enabled($db) {
+        return (string)$db->getSetting('sms_enabled', '0') === '1'
+            && $db->getSetting('twilio_sid', '') !== ''
+            && $db->getSetting('twilio_token', '') !== ''
+            && $db->getSetting('twilio_from', '') !== '';
+    }
+
+    /** Sendet eine SMS. Gibt true bei Erfolg zurück. */
+    public static function send($db, $to, $text) {
+        if (!self::enabled($db)) {
+            return false;
+        }
+        $sid   = (string)$db->getSetting('twilio_sid', '');
+        $token = (string)$db->getSetting('twilio_token', '');
+        $from  = (string)$db->getSetting('twilio_from', '');
+
+        $ch = curl_init("https://api.twilio.com/2010-04-01/Accounts/" . rawurlencode($sid) . "/Messages.json");
+        curl_setopt_array($ch, [
+            CURLOPT_POST => true,
+            CURLOPT_USERPWD => $sid . ':' . $token,
+            CURLOPT_POSTFIELDS => http_build_query(['From' => $from, 'To' => $to, 'Body' => $text]),
+            CURLOPT_RETURNTRANSFER => true,
+            CURLOPT_TIMEOUT => 10,
+        ]);
+        $out  = curl_exec($ch);
+        $code = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        curl_close($ch);
+        if ($code >= 200 && $code < 300) {
+            return true;
+        }
+        error_log("Sms(Twilio) Fehler HTTP $code: " . substr((string)$out, 0, 200));
+        return false;
+    }
+}
diff --git a/index.php b/index.php
index 58d3036..2cfafc0 100644
--- a/index.php
+++ b/index.php
@@ -18,6 +18,7 @@ require_once __DIR__ . '/includes/UniFiController.php';
 require_once __DIR__ . '/includes/Mailer.php';
 require_once __DIR__ . '/includes/Notifier.php';
 require_once __DIR__ . '/includes/Captcha.php';
+require_once __DIR__ . '/includes/Sms.php';
 require_once __DIR__ . '/includes/I18n.php';
 
 $auth = new Auth();
@@ -185,11 +186,16 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['create_voucher'])) {
             $voucherCreated = true;
             Notifier::voucherCreated(1, $site['name'], $_SESSION['user_name'] ?? null);
 
+            $success = 'Voucher erfolgreich erstellt!';
             if ($sendEmail && !empty($recipientEmail)) {
                 $mailer->sendVoucherEmail($recipientEmail, $voucherCode, $site['name'], $maxUses);
-                $success = 'Voucher erstellt. E-Mail versendet.';
-            } else {
-                $success = 'Voucher erfolgreich erstellt!';
+                $success .= ' E-Mail versendet.';
+            }
+            // Optional: Code per SMS (Twilio)
+            $recipientPhone = trim((string)($_POST['recipient_phone'] ?? ''));
+            if (isset($_POST['send_sms']) && $recipientPhone !== '' && Sms::enabled($db)) {
+                $smsText = ($appTitle ? $appTitle . ': ' : '') . 'WLAN-Code ' . $voucherCode;
+                $success .= Sms::send($db, $recipientPhone, $smsText) ? ' SMS versendet.' : ' (SMS fehlgeschlagen)';
             }
         } catch (Exception $e) {
             $error = 'Fehler: ' . $e->getMessage();
@@ -251,6 +257,7 @@ $currentUser = $auth->isLoggedIn() ? $auth->getCurrentUser() : null;
 $captchaMode     = !$auth->isLoggedIn() ? Captcha::mode($db) : 'off';
 $captchaQuestion = $captchaMode === 'math' ? Captcha::newMathChallenge() : '';
 $hcaptchaSiteKey = $captchaMode === 'hcaptcha' ? $db->getSetting('captcha_site_key', '') : '';
+$smsEnabled = Sms::enabled($db);
 $captchaHtml = '';
 if ($captchaMode === 'math') {
     $captchaHtml = '<div class="form-group"><label>Sicherheitsfrage: Wie viel ist ' . htmlspecialchars($captchaQuestion) . '?</label>'
@@ -576,6 +583,19 @@ function buildPrintCard($template, $data, $instructionHeader, $instructionText,
                 </div>
                 <?php endif; ?>
 
+                <?php if ($smsEnabled): ?>
+                <div class="email-option">
+                    <div class="email-checkbox-wrapper">
+                        <input type="checkbox" id="send_sms" name="send_sms" onchange="document.getElementById('sms_field').style.display=this.checked?'block':'none'">
+                        <label for="send_sms">📱 Code per SMS versenden</label>
+                    </div>
+                    <div id="sms_field" style="display:none;margin-top:12px;">
+                        <label for="recipient_phone">Telefonnummer (international, z.B. +49170…)</label>
+                        <input type="tel" id="recipient_phone" name="recipient_phone" placeholder="+49170123456">
+                    </div>
+                </div>
+                <?php endif; ?>
+
                 <button type="submit" class="btn" id="submitBtn">
                     <?= __('voucher_create_btn') ?>
                 </button>