diff --git a/src/ServiceBusSQSChannel.php b/src/ServiceBusSQSChannel.php
index 43f0c65..89d244a 100644
--- a/src/ServiceBusSQSChannel.php
+++ b/src/ServiceBusSQSChannel.php
@@ -4,20 +4,23 @@
 
 use Aws\Sqs\SqsClient;
 use Illuminate\Notifications\Notification;
+use Illuminate\Support\Arr;
 use Illuminate\Support\Facades\Log;
 
 class ServiceBusSQSChannel
 {
     protected SqsClient $sqs;
 
-    public function __construct()
+    public function __construct(array $config = [])
     {
+        $this->config = $config ?: config('services.service_bus');
+
         $this->sqs = new SqsClient([
-            'region' => config('services.service_bus.sqs.region'),
+            'region' => Arr::get($this->config, 'sqs.region'),
             'version' => 'latest',
             'credentials' => [
-                'key' => config('services.service_bus.sqs.key'),
-                'secret' => config('services.service_bus.sqs.secret'),
+                'key' => Arr::get($this->config, 'sqs.key'),
+                'secret' => Arr::get($this->config, 'sqs.secret'),
             ],
         ]);
     }
@@ -29,7 +32,7 @@ public function send($notifiable, Notification $notification)
             ->getParams();
 
         $response = $this->sqs->sendMessage([
-            'QueueUrl' => config('services.service_bus.sqs.queue_url'),
+            'QueueUrl' => Arr::get($this->config, 'sqs.queue_url'),
             'MessageBody' => json_encode($message),
             'MessageGroupId' => $message['from'],
         ]);