diff --git a/app/Http/Controllers/Merchant/CustomDomainController.php b/app/Http/Controllers/Merchant/CustomDomainController.php
index f4ccd3b..c349b00 100644
--- a/app/Http/Controllers/Merchant/CustomDomainController.php
+++ b/app/Http/Controllers/Merchant/CustomDomainController.php
@@ -6,12 +6,16 @@ use App\Http\Controllers\Controller;
 use App\Models\CustomDomain;
 use App\Models\QrCode;
 use App\Services\CustomDomain\CustomDomainService;
+use App\Services\CustomDomain\DomainsSslClient;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 
 class CustomDomainController extends Controller
 {
-    public function __construct(private readonly CustomDomainService $service) {}
+    public function __construct(
+        private readonly CustomDomainService $service,
+        private readonly DomainsSslClient $domains,
+    ) {}
 
     public function store(Request $request, QrCode $storefront): RedirectResponse
     {
@@ -31,6 +35,14 @@ class CustomDomainController extends Controller
 
         $this->service->attach($storefront, $host, (bool) ($data['include_www'] ?? true));
 
+        // Surface this domain in Ladill Domains' "My Domains" (best-effort).
+        $this->domains->registerConnected(
+            $host,
+            (string) $request->user()->public_id,
+            'Storefront: '.$storefront->label,
+            route('merchant.storefronts.show', $storefront),
+        );
+
         return back()->with('success', "Domain added. Point an A record for {$host} (and www) to ".config('customdomain.server_ip').', then click Verify.');
     }
 
@@ -47,7 +59,9 @@ class CustomDomainController extends Controller
     {
         abort_unless($customDomain->user_id === $request->user()->id, 403);
 
+        $host = $customDomain->host;
         $customDomain->delete();
+        $this->domains->removeConnected($host);
 
         return back()->with('success', 'Custom domain removed.');
     }
diff --git a/app/Services/CustomDomain/DomainsSslClient.php b/app/Services/CustomDomain/DomainsSslClient.php
index 93237ca..8000df7 100644
--- a/app/Services/CustomDomain/DomainsSslClient.php
+++ b/app/Services/CustomDomain/DomainsSslClient.php
@@ -49,4 +49,37 @@ class DomainsSslClient
             return false;
         }
     }
+
+    /** Register/update this domain in Ladill Domains' connected-domains registry (best-effort). */
+    public function registerConnected(string $host, string $ownerPublicId, ?string $label = null, ?string $linkUrl = null): void
+    {
+        if (! $this->configured() || $ownerPublicId === '') {
+            return;
+        }
+        try {
+            Http::withToken((string) config('customdomain.ssl_api_key'))->acceptJson()->timeout(10)
+                ->post(config('customdomain.ssl_api_url').'/connected-domains', array_filter([
+                    'host' => $host,
+                    'owner_public_id' => $ownerPublicId,
+                    'label' => $label,
+                    'link_url' => $linkUrl,
+                ]));
+        } catch (\Throwable $e) {
+            Log::info('DomainsSslClient: connected register skipped', ['host' => $host, 'error' => $e->getMessage()]);
+        }
+    }
+
+    /** Remove this domain from the connected-domains registry (best-effort). */
+    public function removeConnected(string $host): void
+    {
+        if (! $this->configured()) {
+            return;
+        }
+        try {
+            Http::withToken((string) config('customdomain.ssl_api_key'))->acceptJson()->timeout(10)
+                ->delete(config('customdomain.ssl_api_url').'/connected-domains/'.urlencode($host));
+        } catch (\Throwable $e) {
+            Log::info('DomainsSslClient: connected remove skipped', ['host' => $host, 'error' => $e->getMessage()]);
+        }
+    }
 }