diff --git a/mailpoet/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php b/mailpoet/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php
index 66ee9d56fb..5eb0f48204 100644
--- a/mailpoet/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php
+++ b/mailpoet/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php
@@ -5,8 +5,8 @@ namespace MailPoet\API\JSON\ResponseBuilders;
 use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Entities\SegmentEntity;
 use MailPoet\Entities\SendingQueueEntity;
-use MailPoet\Models\SendingQueue;
 use MailPoet\Newsletter\NewslettersRepository;
+use MailPoet\Newsletter\Sending\SendingQueuesRepository;
 use MailPoet\Newsletter\Statistics\NewsletterStatistics;
 use MailPoet\Newsletter\Statistics\NewsletterStatisticsRepository;
 use MailPoet\Newsletter\Url as NewsletterUrl;
@@ -35,16 +35,21 @@ class NewslettersResponseBuilder {
   /** @var NewsletterUrl */
   private $newsletterUrl;
 
+  /** @var SendingQueuesRepository */
+  private $sendingQueuesRepository;
+
   public function __construct(
     EntityManager $entityManager,
     NewslettersRepository $newslettersRepository,
     NewsletterStatisticsRepository $newslettersStatsRepository,
-    NewsletterUrl $newsletterUrl
+    NewsletterUrl $newsletterUrl,
+    SendingQueuesRepository $sendingQueuesRepository
   ) {
     $this->newslettersStatsRepository = $newslettersStatsRepository;
     $this->newslettersRepository = $newslettersRepository;
     $this->entityManager = $entityManager;
     $this->newsletterUrl = $newsletterUrl;
+    $this->sendingQueuesRepository = $sendingQueuesRepository;
   }
 
   public function build(NewsletterEntity $newsletter, $relations = []) {
@@ -86,9 +91,10 @@ class NewslettersResponseBuilder {
         $data['children_count'] = $this->newslettersStatsRepository->getChildrenCount($newsletter);
       }
       if ($relation === self::RELATION_SCHEDULED) {
-        $data['total_scheduled'] = (int)SendingQueue::findTaskByNewsletterId($newsletter->getId())
-          ->where('tasks.status', SendingQueue::STATUS_SCHEDULED)
-          ->count();
+        $data['total_scheduled'] = $this->sendingQueuesRepository->countAllByNewsletterAndTaskStatus(
+          $newsletter,
+          SendingQueueEntity::STATUS_SCHEDULED
+        );
       }
 
       if ($relation === self::RELATION_STATISTICS) {
@@ -150,9 +156,10 @@ class NewslettersResponseBuilder {
       $data['segments'] = [];
       $data['options'] = $this->buildOptions($newsletter);
       $data['total_sent'] = $statistics ? $statistics->getTotalSentCount() : 0;
-      $data['total_scheduled'] = (int)SendingQueue::findTaskByNewsletterId($newsletter->getId())
-        ->where('tasks.status', SendingQueue::STATUS_SCHEDULED)
-        ->count();
+      $data['total_scheduled'] = $this->sendingQueuesRepository->countAllByNewsletterAndTaskStatus(
+        $newsletter,
+        SendingQueueEntity::STATUS_SCHEDULED
+      );
     } elseif ($newsletter->getType() === NewsletterEntity::TYPE_NOTIFICATION) {
       $data['segments'] = $this->buildSegments($newsletter);
       $data['children_count'] = $this->newslettersStatsRepository->getChildrenCount($newsletter);
diff --git a/mailpoet/tests/integration/API/JSON/ResponseBuilders/NewslettersResponseBuilderTest.php b/mailpoet/tests/integration/API/JSON/ResponseBuilders/NewslettersResponseBuilderTest.php
index 1b60199c4d..1cb2bac203 100644
--- a/mailpoet/tests/integration/API/JSON/ResponseBuilders/NewslettersResponseBuilderTest.php
+++ b/mailpoet/tests/integration/API/JSON/ResponseBuilders/NewslettersResponseBuilderTest.php
@@ -6,6 +6,7 @@ use Codeception\Util\Stub;
 use MailPoet\DI\ContainerWrapper;
 use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Newsletter\NewslettersRepository;
+use MailPoet\Newsletter\Sending\SendingQueuesRepository;
 use MailPoet\Newsletter\Statistics\NewsletterStatistics;
 use MailPoet\Newsletter\Statistics\NewsletterStatisticsRepository;
 use MailPoet\Newsletter\Url;
@@ -41,7 +42,8 @@ class NewslettersResponseBuilderTest extends \MailPoetTest {
     ]);
     $newsletterRepository = Stub::make(NewslettersRepository::class);
     $newsletterUrl = $this->diContainer->get(Url::class);
-    $responseBuilder = new NewslettersResponseBuilder($em, $newsletterRepository, $newsletterStatsRepository, $newsletterUrl);
+    $sendingQueuesRepository = $this->diContainer->get(SendingQueuesRepository::class);
+    $responseBuilder = new NewslettersResponseBuilder($em, $newsletterRepository, $newsletterStatsRepository, $newsletterUrl, $sendingQueuesRepository);
     $response = $responseBuilder->build($newsletter, [
       NewslettersResponseBuilder::RELATION_CHILDREN_COUNT,
       NewslettersResponseBuilder::RELATION_TOTAL_SENT,
diff --git a/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php b/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php
index de2471c8ca..f92f974594 100644
--- a/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php
+++ b/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php
@@ -33,6 +33,7 @@ use MailPoet\Newsletter\Preview\SendPreviewException;
 use MailPoet\Newsletter\Scheduler\PostNotificationScheduler;
 use MailPoet\Newsletter\Scheduler\Scheduler;
 use MailPoet\Newsletter\Segment\NewsletterSegmentRepository;
+use MailPoet\Newsletter\Sending\SendingQueuesRepository;
 use MailPoet\Newsletter\Statistics\NewsletterStatisticsRepository;
 use MailPoet\Newsletter\Url;
 use MailPoet\Router\Router;
@@ -107,7 +108,8 @@ class NewslettersTest extends \MailPoetTest {
             $this->diContainer->get(EntityManager::class),
             $this->makeEmpty(WCHelper::class)
           ),
-          $this->diContainer->get(Url::class)
+          $this->diContainer->get(Url::class),
+          $this->diContainer->get(SendingQueuesRepository::class)
         ),
       ]
     );