diff --git a/Changes.md b/Changes.md
index 1fa7536..bab3732 100644
--- a/Changes.md
+++ b/Changes.md
@@ -2,6 +2,16 @@
 
 ---
 
+## 2026-07-02 – Feature: Zusätzliche CC-E-Mail-Adressen pro Kunde (Issue #111)
+
+- **`migrations/084_customer_cc_emails.sql`:** Neue Spalten `email_cc1`, `email_cc2` in `customers`
+- **`src/Models/Customer.php`:** `create()` und `update()` speichern die beiden CC-Adressen (Whitespace wird zu NULL normalisiert)
+- **`src/Views/customers/form.php`:** Zwei neue Eingabefelder „E-Mail CC 1/2" unter der Haupt-E-Mail
+- **`src/Controllers/InvoiceController.php`:** `show()` lädt den Kunden und übergibt ihn an die Detailansicht
+- **`src/Views/invoices/show.php`:** CC-Felder im E-Mail-Sende-Modal werden mit den hinterlegten Kunden-CC-Adressen vorbelegt
+
+---
+
 ## 2026-06-29 – Feature: Ereignisse-Log für Nextcloud-Import (Issue #109)
 
 - **`migrations/083_system_events.sql`:** Neue Tabelle `system_events` (id, channel, message, created_at)
diff --git a/docs/funktionen.md b/docs/funktionen.md
index e436719..807b2b3 100644
--- a/docs/funktionen.md
+++ b/docs/funktionen.md
@@ -42,6 +42,8 @@ CRUD für Lieferantenstammdaten. Lieferanten können Belegen zugeordnet werden;
 
 CRUD für Kundenstammdaten. Kunden werden beim Erstellen von Ausgangsrechnungen ausgewählt.
 
+- Pro Kunde können neben der Haupt-E-Mail-Adresse **zwei zusätzliche CC-Adressen** hinterlegt werden. Beim Rechnungsversand werden diese automatisch in die CC-Felder des E-Mail-Dialogs übernommen.
+
 ---
 
 ## Ausgangsrechnungen
diff --git a/migrations/084_customer_cc_emails.sql b/migrations/084_customer_cc_emails.sql
new file mode 100644
index 0000000..5b5fc24
--- /dev/null
+++ b/migrations/084_customer_cc_emails.sql
@@ -0,0 +1,7 @@
+-- 084_customer_cc_emails.sql
+-- Zwei zusätzliche CC-E-Mail-Adressen pro Kunde, die beim Rechnungsversand
+-- automatisch in die CC-Felder übernommen werden.
+
+ALTER TABLE customers
+    ADD COLUMN IF NOT EXISTS email_cc1 VARCHAR(255) NULL DEFAULT NULL AFTER email,
+    ADD COLUMN IF NOT EXISTS email_cc2 VARCHAR(255) NULL DEFAULT NULL AFTER email_cc1;
diff --git a/src/Controllers/InvoiceController.php b/src/Controllers/InvoiceController.php
index 4060542..72d9384 100644
--- a/src/Controllers/InvoiceController.php
+++ b/src/Controllers/InvoiceController.php
@@ -131,6 +131,11 @@ class InvoiceController extends BaseController
             $accounts = Account::all(['aktiv' => 1]);
         }
 
+        // Kunde für CC-Vorbelegung im E-Mail-Modal
+        $customer = !empty($invoice['customer_id'])
+            ? \Steuerkram\Models\Customer::find((int)$invoice['customer_id'])
+            : null;
+
         $view = new View();
         $view->render('layout/base.php', [
             'pageTitle' => 'Rechnung ' . ($invoice['rechnungs_nr'] ?? 'Entwurf'),
@@ -142,6 +147,7 @@ class InvoiceController extends BaseController
                 'originalrechnung' => $originalrechnung,
                 'bookings'         => $bookings,
                 'accounts'         => $accounts,
+                'customer'         => $customer ?: null,
             ]),
         ]);
     }
diff --git a/src/Models/Customer.php b/src/Models/Customer.php
index 44695c4..4814c16 100644
--- a/src/Models/Customer.php
+++ b/src/Models/Customer.php
@@ -39,8 +39,8 @@ class Customer
         $nr = self::generateKundennummer();
         Database::execute(
             'INSERT INTO customers (kundennummer, firma, anrede, vorname, nachname, strasse, plz, ort, land,
-             email, telefon, ust_id, steuernummer, payment_days, notes, mail_subject_template, mail_body_template)
-             VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
+             email, email_cc1, email_cc2, telefon, ust_id, steuernummer, payment_days, notes, mail_subject_template, mail_body_template)
+             VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
             [
                 $data['kundennummer'] ?? $nr,
                 $data['firma'] ?? null,
@@ -52,6 +52,8 @@ class Customer
                 $data['ort'],
                 $data['land'] ?? 'DE',
                 $data['email'] ?? null,
+                trim($data['email_cc1'] ?? '') !== '' ? trim($data['email_cc1']) : null,
+                trim($data['email_cc2'] ?? '') !== '' ? trim($data['email_cc2']) : null,
                 $data['telefon'] ?? null,
                 $data['ust_id'] ?? null,
                 $data['steuernummer'] ?? null,
@@ -68,7 +70,7 @@ class Customer
     {
         Database::execute(
             'UPDATE customers SET firma=?, anrede=?, vorname=?, nachname=?, strasse=?, plz=?, ort=?, land=?,
-             email=?, telefon=?, ust_id=?, steuernummer=?, payment_days=?, notes=?,
+             email=?, email_cc1=?, email_cc2=?, telefon=?, ust_id=?, steuernummer=?, payment_days=?, notes=?,
              mail_subject_template=?, mail_body_template=?, updated_at=NOW()
              WHERE id=?',
             [
@@ -81,6 +83,8 @@ class Customer
                 $data['ort'],
                 $data['land'] ?? 'DE',
                 $data['email'] ?? null,
+                trim($data['email_cc1'] ?? '') !== '' ? trim($data['email_cc1']) : null,
+                trim($data['email_cc2'] ?? '') !== '' ? trim($data['email_cc2']) : null,
                 $data['telefon'] ?? null,
                 $data['ust_id'] ?? null,
                 $data['steuernummer'] ?? null,
diff --git a/src/Views/customers/form.php b/src/Views/customers/form.php
index b0d664f..1a860f3 100644
--- a/src/Views/customers/form.php
+++ b/src/Views/customers/form.php
@@ -60,6 +60,22 @@
                 </div>
             </div>
 
+            <div class="form-grid form-grid-2">
+                <div class="form-group">
+                    <label for="email_cc1">E-Mail CC 1 <span style="font-weight:normal;color:var(--color-text-muted)">(optional)</span></label>
+                    <input type="email" id="email_cc1" name="email_cc1" value="<?= $h($customer['email_cc1'] ?? '') ?>"
+                           placeholder="cc1@example.com">
+                </div>
+                <div class="form-group">
+                    <label for="email_cc2">E-Mail CC 2 <span style="font-weight:normal;color:var(--color-text-muted)">(optional)</span></label>
+                    <input type="email" id="email_cc2" name="email_cc2" value="<?= $h($customer['email_cc2'] ?? '') ?>"
+                           placeholder="cc2@example.com">
+                </div>
+            </div>
+            <p style="font-size:.78rem;color:var(--color-text-muted);margin:-.5rem 0 1rem">
+                Zusätzliche CC-Adressen werden beim Rechnungsversand automatisch als Kopie vorgeschlagen.
+            </p>
+
             <div class="form-grid form-grid-3">
                 <div class="form-group">
                     <label for="ust_id">Umsatzsteuer-ID</label>
diff --git a/src/Views/invoices/show.php b/src/Views/invoices/show.php
index 0267ebf..d56d065 100644
--- a/src/Views/invoices/show.php
+++ b/src/Views/invoices/show.php
@@ -370,11 +370,13 @@ $badgeClass = match($invoice['status']) {
             </div>
             <div class="form-group">
                 <label>CC 1 <span style="font-weight:normal;color:#888">(optional)</span></label>
-                <input type="email" name="email_cc1" placeholder="cc1@example.com">
+                <input type="email" name="email_cc1" placeholder="cc1@example.com"
+                       value="<?= $h($customer['email_cc1'] ?? '') ?>">
             </div>
             <div class="form-group">
                 <label>CC 2 <span style="font-weight:normal;color:#888">(optional)</span></label>
-                <input type="email" name="email_cc2" placeholder="cc2@example.com">
+                <input type="email" name="email_cc2" placeholder="cc2@example.com"
+                       value="<?= $h($customer['email_cc2'] ?? '') ?>">
             </div>
             <div style="display:flex;gap:.75rem;justify-content:flex-end;margin-top:1.25rem">
                 <button type="button" class="btn btn-secondary"
diff --git a/src/version.txt b/src/version.txt
index 08f076b..65105d4 100644
--- a/src/version.txt
+++ b/src/version.txt
@@ -1 +1 @@
-1-260629
+1-260702
diff --git a/tests/48_CustomerCcEmailsTest.php b/tests/48_CustomerCcEmailsTest.php
new file mode 100644
index 0000000..2aa967c
--- /dev/null
+++ b/tests/48_CustomerCcEmailsTest.php
@@ -0,0 +1,57 @@
+<?php
+
+declare(strict_types=1);
+
+use Steuerkram\Models\Customer;
+
+class CustomerCcEmailsTest extends TestCase
+{
+    protected string $testName = 'Test 48: Zusätzliche CC-E-Mail-Adressen pro Kunde';
+
+    public function run(): void
+    {
+        // Kunde mit zwei CC-Adressen anlegen
+        $id = Customer::create([
+            'nachname'  => 'CC-Test',
+            'strasse'   => 'Musterweg 1',
+            'plz'       => '12345',
+            'ort'       => 'Musterstadt',
+            'email'     => 'haupt@example.com',
+            'email_cc1' => 'kopie1@example.com',
+            'email_cc2' => 'kopie2@example.com',
+        ]);
+        $this->assertGreaterThan(0, $id, 'Kunde angelegt');
+
+        $customer = Customer::find($id);
+        $this->assertEquals('kopie1@example.com', $customer['email_cc1'], 'CC1 gespeichert');
+        $this->assertEquals('kopie2@example.com', $customer['email_cc2'], 'CC2 gespeichert');
+
+        // Leere CC-Felder werden als NULL gespeichert
+        Customer::update($id, [
+            'nachname'  => 'CC-Test',
+            'strasse'   => 'Musterweg 1',
+            'plz'       => '12345',
+            'ort'       => 'Musterstadt',
+            'email'     => 'haupt@example.com',
+            'email_cc1' => '',
+            'email_cc2' => '  ',
+        ]);
+        $customer = Customer::find($id);
+        $this->assert($customer['email_cc1'] === null, 'Leeres CC1 wird NULL');
+        $this->assert($customer['email_cc2'] === null, 'Whitespace-CC2 wird NULL');
+
+        // CC1 aktualisieren, mit Trimmen
+        Customer::update($id, [
+            'nachname'  => 'CC-Test',
+            'strasse'   => 'Musterweg 1',
+            'plz'       => '12345',
+            'ort'       => 'Musterstadt',
+            'email'     => 'haupt@example.com',
+            'email_cc1' => '  neu@example.com  ',
+            'email_cc2' => 'kopie2@example.com',
+        ]);
+        $customer = Customer::find($id);
+        $this->assertEquals('neu@example.com', $customer['email_cc1'], 'CC1 getrimmt aktualisiert');
+        $this->assertEquals('kopie2@example.com', $customer['email_cc2'], 'CC2 aktualisiert');
+    }
+}