diff --git a/app/Enums/ActivityType.php b/app/Enums/ActivityType.php
index 7565d7d5..56eb3a5e 100644
--- a/app/Enums/ActivityType.php
+++ b/app/Enums/ActivityType.php
@@ -21,6 +21,7 @@ enum ActivityType: string
     case NewsletterSubscription = 'newsletter_subscription';
     case SubscriptionChange = 'subscription_change';
     case MailSent = 'mail_sent';
+    case EmailUnsubscribe = 'email_unsubscribe';
 
     public function label(): string
     {
@@ -37,6 +38,7 @@ enum ActivityType: string
             self::NewsletterSubscription => 'Newsletter',
             self::SubscriptionChange => 'Abo',
             self::MailSent => 'E-Mail',
+            self::EmailUnsubscribe => 'Mail-Abmeldung',
         };
     }
 
@@ -53,6 +55,7 @@ enum ActivityType: string
             self::ContactRequest, self::NewsletterSubscription => 'cyan',
             self::LegalRequest, self::WithdrawalRequest, self::TerminationRequest, self::SubscriptionChange => 'red',
             self::MailSent => 'purple',
+            self::EmailUnsubscribe => 'orange',
         };
     }
 }
diff --git a/app/Http/Controllers/EmailUnsubscribeController.php b/app/Http/Controllers/EmailUnsubscribeController.php
index dca120b6..f2236afe 100644
--- a/app/Http/Controllers/EmailUnsubscribeController.php
+++ b/app/Http/Controllers/EmailUnsubscribeController.php
@@ -2,8 +2,10 @@
 
 namespace App\Http\Controllers;
 
+use App\Enums\ActivityType;
 use App\Enums\EmailNotificationType;
 use App\Models\User;
+use App\Services\ActivityLog;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
@@ -19,9 +21,15 @@ use Illuminate\View\View;
  * rückgängig zu machen. Der POST auf dieselbe URL bedient den
  * List-Unsubscribe-Header (RFC 8058) — Mail-Clients senden ihn ohne
  * Nutzer-Interaktion auf der Seite.
+ *
+ * Jede tatsächliche Zustandsänderung landet im Aktivitäts-Verlauf
+ * (Admin ▸ Reports ▸ Verlauf) — wiederholte Klicks erzeugen keine
+ * Doppel-Einträge.
  */
 class EmailUnsubscribeController extends Controller
 {
+    public function __construct(private readonly ActivityLog $activityLog) {}
+
     public function show(Request $request, User $user, string $type): View
     {
         $notificationType = $this->resolveType($type);
@@ -33,7 +41,7 @@ class EmailUnsubscribeController extends Controller
             ]);
         }
 
-        $user->optOutOfEmailNotification($notificationType);
+        $this->optOut($user, $notificationType, 'link');
 
         return view('web.email-unsubscribe', [
             'state' => 'unsubscribed',
@@ -53,7 +61,7 @@ class EmailUnsubscribeController extends Controller
     {
         abort_unless($request->hasValidSignature(), 403);
 
-        $user->optOutOfEmailNotification($this->resolveType($type));
+        $this->optOut($user, $this->resolveType($type), 'one-click');
 
         return response('Sie wurden erfolgreich abgemeldet.');
     }
@@ -64,7 +72,16 @@ class EmailUnsubscribeController extends Controller
 
         $notificationType = $this->resolveType($type);
 
-        $user->optIntoEmailNotification($notificationType);
+        if (! $user->wantsEmailNotification($notificationType)) {
+            $user->optIntoEmailNotification($notificationType);
+
+            $this->activityLog->record(
+                ActivityType::EmailUnsubscribe,
+                sprintf('%s (%s) hat %s wieder aktiviert.', $user->name, $user->email, $notificationType->unsubscribeLabel()),
+                user: $user,
+                meta: ['type' => $notificationType->value, 'action' => 'resubscribe'],
+            );
+        }
 
         return view('web.email-unsubscribe', [
             'state' => 'resubscribed',
@@ -72,6 +89,22 @@ class EmailUnsubscribeController extends Controller
         ]);
     }
 
+    private function optOut(User $user, EmailNotificationType $notificationType, string $method): void
+    {
+        if (! $user->wantsEmailNotification($notificationType)) {
+            return;
+        }
+
+        $user->optOutOfEmailNotification($notificationType);
+
+        $this->activityLog->record(
+            ActivityType::EmailUnsubscribe,
+            sprintf('%s (%s) hat %s abbestellt.', $user->name, $user->email, $notificationType->unsubscribeLabel()),
+            user: $user,
+            meta: ['type' => $notificationType->value, 'action' => 'unsubscribe', 'method' => $method],
+        );
+    }
+
     private function resolveType(string $type): EmailNotificationType
     {
         $notificationType = EmailNotificationType::tryFrom($type);
diff --git a/resources/views/livewire/admin/reports/activity.blade.php b/resources/views/livewire/admin/reports/activity.blade.php
index 656543fc..133484cf 100644
--- a/resources/views/livewire/admin/reports/activity.blade.php
+++ b/resources/views/livewire/admin/reports/activity.blade.php
@@ -65,7 +65,7 @@ new #[Layout('components.layouts.app'), Title('Verlauf')] class extends Componen
         :badge="__('Admin Backend')"
         :eyebrow="__('Administration · Reports')"
         :title="__('Verlauf')"
-        :description="__('Chronologisches Protokoll der Systemereignisse: Registrierungen, Anmeldungen, Pressemitteilungen, Zahlungen, Formular-Eingänge und versendete E-Mails.')"
+        :description="__('Chronologisches Protokoll der Systemereignisse: Registrierungen, Anmeldungen, Pressemitteilungen, Zahlungen, Formular-Eingänge, versendete E-Mails und Mail-Abmeldungen.')"
     />
 
     {{-- ============== FILTER-PANEL ============== --}}
diff --git a/tests/Feature/Admin/NewsletterCampaignTest.php b/tests/Feature/Admin/NewsletterCampaignTest.php
index 87da9858..82c59f2e 100644
--- a/tests/Feature/Admin/NewsletterCampaignTest.php
+++ b/tests/Feature/Admin/NewsletterCampaignTest.php
@@ -1,5 +1,6 @@
 <?php
 
+use App\Enums\ActivityType;
 use App\Enums\EmailNotificationType;
 use App\Enums\NewsletterCampaignStatus;
 use App\Enums\NewsletterRecipientStatus;
@@ -7,6 +8,7 @@ use App\Enums\Portal;
 use App\Enums\UserPaymentOptionStatus;
 use App\Jobs\SendNewsletterCampaignMail;
 use App\Mail\NewsletterCampaignMail;
+use App\Models\ActivityEvent;
 use App\Models\NewsletterCampaign;
 use App\Models\PaymentOption;
 use App\Models\User;
@@ -172,6 +174,19 @@ test('the newsletter unsubscribe link records the opt-out immediately', function
 
     // Abgemeldete User fallen sofort aus jeder Empfänger-Auswahl.
     expect(app(CampaignRecipients::class)->query([])->pluck('id'))->not->toContain($user->id);
+
+    // Die Abmeldung steht im Aktivitäts-Verlauf — ein zweiter Klick
+    // erzeugt keinen Doppel-Eintrag.
+    $this->get($url)->assertOk();
+
+    $event = ActivityEvent::query()
+        ->where('type', ActivityType::EmailUnsubscribe->value)
+        ->sole();
+
+    expect($event->user_id)->toBe($user->id)
+        ->and($event->description)->toContain('abbestellt')
+        ->and($event->meta['method'])->toBe('link')
+        ->and($event->meta['type'])->toBe('newsletter');
 });
 
 test('the campaign editor saves drafts and sends via the queue', function () {