diff --git a/tests/integration/API/JSON/ResponseBuilders/NewslettersResponseBuilderTest.php b/tests/integration/API/JSON/ResponseBuilders/NewslettersResponseBuilderTest.php
new file mode 100644
index 0000000000..ea9a5d5df6
--- /dev/null
+++ b/tests/integration/API/JSON/ResponseBuilders/NewslettersResponseBuilderTest.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace MailPoet\API\JSON\ResponseBuilders;
+
+use Codeception\Util\Stub;
+use MailPoet\DI\ContainerWrapper;
+use MailPoet\Entities\NewsletterEntity;
+use MailPoet\Newsletter\Statistics\NewsletterStatistics;
+use MailPoet\Newsletter\Statistics\NewsletterStatisticsRepository;
+use MailPoetVendor\Doctrine\ORM\EntityManager;
+
+class NewslettersResponseBuilderTest extends \MailPoetTest {
+
+  public function testItBuildsStats() {
+    $di = ContainerWrapper::getInstance();
+    $em = $di->get(EntityManager::class);
+    $em->persist($newsletter = new NewsletterEntity);
+    $newsletter->setSubject('Response Builder Test');
+    $newsletter->setType(NewsletterEntity::TYPE_STANDARD);
+    $newsletter->setStatus(NewsletterEntity::STATUS_SENT);
+    $em->flush();
+    $stats = [
+      'total_sent' => 10,
+      'children_count' => 3,
+      'statistics' => [
+        'opened' => 6,
+        'clicked' => 4,
+        'unsubscribed' => 2,
+        'revenue' => null,
+      ],
+    ];
+    $repository = Stub::make(NewsletterStatisticsRepository::class, [
+      'getTotalSentCount' => $stats['total_sent'],
+      'getChildrenCount' => $stats['children_count'],
+      'getStatistics' => new NewsletterStatistics(4, 6, 2, 10, null),
+    ]);
+    $responseBuilder = new NewslettersResponseBuilder($repository);
+    $response = $responseBuilder->build($newsletter, [
+      NewslettersResponseBuilder::RELATION_CHILDREN_COUNT,
+      NewslettersResponseBuilder::RELATION_TOTAL_SENT,
+      NewslettersResponseBuilder::RELATION_STATISTICS,
+    ]);
+    expect($response['total_sent'])->equals($stats['total_sent']);
+    expect($response['children_count'])->equals($stats['children_count']);
+    expect($response['statistics'])->equals($stats['statistics']);
+    $em->remove($newsletter);
+    $em->flush();
+  }
+}
\ No newline at end of file