diff --git a/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php b/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php
index bef14e7b8b..3752365c22 100644
--- a/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php
+++ b/lib/API/JSON/ResponseBuilders/NewslettersResponseBuilder.php
@@ -5,12 +5,29 @@ namespace MailPoet\API\JSON\ResponseBuilders;
 use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Entities\SegmentEntity;
 use MailPoet\Entities\SendingQueueEntity;
+use MailPoet\Models\SendingQueue;
+use MailPoet\Newsletter\Statistics\NewsletterStatisticsRepository;
 
 class NewslettersResponseBuilder {
   const DATE_FORMAT = 'Y-m-d H:i:s';
 
-  public function build(NewsletterEntity $newsletter) {
-    return [
+  const RELATION_QUEUE = 'queue';
+  const RELATION_SEGMENTS = 'segments';
+  const RELATION_OPTIONS = 'options';
+  const RELATION_TOTAL_SENT = 'total_sent';
+  const RELATION_CHILDREN_COUNT = 'children_count';
+  const RELATION_SCHEDULED = 'scheduled';
+  const RELATION_STATISTICS = 'statistics';
+
+  /** @var NewslettersStatsRepository */
+  private $newslettersStatsRepository;
+
+  public function __construct(NewsletterStatisticsRepository $newslettersStatsRepository) {
+    $this->newslettersStatsRepository = $newslettersStatsRepository;
+  }
+
+  public function build(NewsletterEntity $newsletter, $relations = []) {
+    $data = [
       'id' => (string)$newsletter->getId(), // (string) for BC
       'hash' => $newsletter->getHash(),
       'subject' => $newsletter->getSubject(),
@@ -27,12 +44,36 @@ class NewslettersResponseBuilder {
       'updated_at' => $newsletter->getUpdatedAt()->format(self::DATE_FORMAT),
       'deleted_at' => ($deletedAt = $newsletter->getDeletedAt()) ? $deletedAt->format(self::DATE_FORMAT) : null,
       'parent_id' => ($parent = $newsletter->getParent()) ? $parent->getId() : null,
-      'segments' => $this->buildSegments($newsletter),
-      'options' => $this->buildOptions($newsletter),
-      'queue' => ($queue = $newsletter->getLatestQueue()) ? $this->buildQueue($queue) : false, // false for BC
       'unsubscribe_token' => $newsletter->getUnsubscribeToken(),
       'ga_campaign' => $newsletter->getGaCampaign(),
     ];
+
+    foreach ($relations as $relation) {
+      if ($relation === self::RELATION_QUEUE) {
+        $data['queue'] = ($queue = $newsletter->getLatestQueue()) ? $this->buildQueue($queue) : false; // false for BC
+      }
+      if ($relation === self::RELATION_SEGMENTS) {
+        $data['segments'] = $this->buildSegments($newsletter);
+      }
+      if ($relation === self::RELATION_OPTIONS) {
+        $data['options'] = $this->buildOptions($newsletter);
+      }
+      if ($relation === self::RELATION_TOTAL_SENT) {
+        $data['totalSent'] = $this->newslettersStatsRepository->getTotalSentCount($newsletter);
+      }
+      if ($relation === self::RELATION_CHILDREN_COUNT) {
+        $data['childrenCount'] = count($newsletter->getChildren());
+      }
+      if ($relation === self::RELATION_SCHEDULED) {
+        $data['totalScheduled'] = (int)SendingQueue::findTaskByNewsletterId($this->id)
+        ->where('tasks.status', SendingQueue::STATUS_SCHEDULED)
+        ->count();
+      }
+      if ($relation === self::RELATION_STATISTICS) {
+        $data['statistics'] = $this->newslettersStatsRepository->getStatistics($newsletter);
+      }
+    }
+    return $data;
   }
 
   private function buildSegments(NewsletterEntity $newsletter) {
diff --git a/lib/API/JSON/v1/Newsletters.php b/lib/API/JSON/v1/Newsletters.php
index 9d85a1b460..9cebbaa96f 100644
--- a/lib/API/JSON/v1/Newsletters.php
+++ b/lib/API/JSON/v1/Newsletters.php
@@ -118,7 +118,11 @@ class Newsletters extends APIEndpoint {
       : null;
 
     if ($newsletter) {
-      $response = $this->newslettersResponseBuilder->build($newsletter);
+      $response = $this->newslettersResponseBuilder->build($newsletter, [
+        NewslettersResponseBuilder::RELATION_SEGMENTS,
+        NewslettersResponseBuilder::RELATION_OPTIONS,
+        NewslettersResponseBuilder::RELATION_QUEUE,
+      ]);
       $previewUrl = NewsletterUrl::getViewInBrowserUrl(
         NewsletterUrl::TYPE_LISTING_EDITOR,
         (object)[
@@ -138,25 +142,27 @@ class Newsletters extends APIEndpoint {
   }
 
   public function getWithStats($data = []) {
-    $id = (isset($data['id']) ? (int)$data['id'] : false);
-    $newsletter = Newsletter::findOne($id);
-    if ($newsletter instanceof Newsletter) {
-      $newsletter = $newsletter
-        ->withSegments()
-        ->withOptions()
-        ->withSendingQueue()
-        ->withTotalSent()
-        ->withStatistics($this->woocommerceHelper);
-
-      $previewUrl = NewsletterUrl::getViewInBrowserUrl(
+    $newsletter = isset($data['id'])
+      ? $this->newslettersRepository->findOneById((int)$data['id'])
+      : null;
+    if ($newsletter) {
+      $response = $this->newslettersResponseBuilder->build($newsletter, [
+          NewslettersResponseBuilder::RELATION_SEGMENTS,
+          NewslettersResponseBuilder::RELATION_OPTIONS,
+          NewslettersResponseBuilder::RELATION_QUEUE,
+          NewslettersResponseBuilder::RELATION_TOTAL_SENT,
+          NewslettersResponseBuilder::RELATION_STATISTICS,
+      ]);
+      $response = $this->wp->applyFilters('mailpoet_api_newsletters_get_after', $response);
+      $response['preview_url'] = NewsletterUrl::getViewInBrowserUrl(
         NewsletterUrl::TYPE_LISTING_EDITOR,
-        $newsletter,
+        (object)[
+          'id' => $newsletter->getId(),
+          'hash' => $newsletter->getHash(),
+        ],
         Subscriber::getCurrentWPUser()
       );
-
-      $newsletter = $this->wp->applyFilters('mailpoet_api_newsletters_get_after', $newsletter->asArray());
-      $newsletter['preview_url'] = $previewUrl;
-      return $this->successResponse($newsletter);
+      return $this->successResponse($response);
     } else {
       return $this->errorResponse([
         APIError::NOT_FOUND => __('This email does not exist.', 'mailpoet'),
diff --git a/lib/Entities/NewsletterEntity.php b/lib/Entities/NewsletterEntity.php
index f2b4d786de..19bed3c4d0 100644
--- a/lib/Entities/NewsletterEntity.php
+++ b/lib/Entities/NewsletterEntity.php
@@ -125,6 +125,12 @@ class NewsletterEntity {
    */
   private $parent;
 
+  /**
+   * @ORM\OneToMany(targetEntity="MailPoet\Entities\NewsletterEntity", mappedBy="parent")
+   * @var NewsletterEntity[]|ArrayCollection
+   */
+  private $children;
+
   /**
    * @ORM\OneToMany(targetEntity="MailPoet\Entities\NewsletterSegmentEntity", mappedBy="newsletter")
    * @var NewsletterSegmentEntity[]|ArrayCollection
@@ -144,6 +150,7 @@ class NewsletterEntity {
   private $queues;
 
   public function __construct() {
+    $this->children = new ArrayCollection();
     $this->newsletterSegments = new ArrayCollection();
     $this->options = new ArrayCollection();
     $this->queues = new ArrayCollection();
@@ -353,6 +360,13 @@ class NewsletterEntity {
     $this->parent = $parent;
   }
 
+  /**
+   * @return NewsletterEntity[]|ArrayCollection
+   */
+  public function getChildren() {
+    return $this->children;
+  }
+
   /**
    * @return NewsletterSegmentEntity[]|ArrayCollection
    */