diff --git a/mailpoet/lib/API/JSON/v1/Newsletters.php b/mailpoet/lib/API/JSON/v1/Newsletters.php
index 04dd502e62..6eb2c804d1 100644
--- a/mailpoet/lib/API/JSON/v1/Newsletters.php
+++ b/mailpoet/lib/API/JSON/v1/Newsletters.php
@@ -25,7 +25,6 @@ use MailPoet\Newsletter\Scheduler\Scheduler;
 use MailPoet\Newsletter\Url as NewsletterUrl;
 use MailPoet\Settings\SettingsController;
 use MailPoet\UnexpectedValueException;
-use MailPoet\Util\License\Features\Subscribers as SubscribersFeature;
 use MailPoet\Util\Security;
 use MailPoet\WP\Emoji;
 use MailPoet\WP\Functions as WPFunctions;
@@ -64,9 +63,6 @@ class Newsletters extends APIEndpoint {
   /** @var Emoji */
   private $emoji;
 
-  /** @var SubscribersFeature */
-  private $subscribersFeature;
-
   /** @var SendPreviewController */
   private $sendPreviewController;
 
@@ -92,7 +88,6 @@ class Newsletters extends APIEndpoint {
     NewslettersResponseBuilder $newslettersResponseBuilder,
     PostNotificationScheduler $postNotificationScheduler,
     Emoji $emoji,
-    SubscribersFeature $subscribersFeature,
     SendPreviewController $sendPreviewController,
     NewsletterSaveController $newsletterSaveController,
     NewsletterUrl $newsletterUrl,
@@ -108,7 +103,6 @@ class Newsletters extends APIEndpoint {
     $this->newslettersResponseBuilder = $newslettersResponseBuilder;
     $this->postNotificationScheduler = $postNotificationScheduler;
     $this->emoji = $emoji;
-    $this->subscribersFeature = $subscribersFeature;
     $this->sendPreviewController = $sendPreviewController;
     $this->newsletterSaveController = $newsletterSaveController;
     $this->newsletterUrl = $newsletterUrl;
@@ -171,12 +165,6 @@ class Newsletters extends APIEndpoint {
       ]);
     }
 
-    if ($status === NewsletterEntity::STATUS_ACTIVE && $this->subscribersFeature->check()) {
-      return $this->errorResponse([
-        APIError::FORBIDDEN => __('Subscribers limit reached.', 'mailpoet'),
-      ], [], Response::STATUS_FORBIDDEN);
-    }
-
     $newsletter = $this->getNewsletter($data);
     if ($newsletter === null) {
       return $this->errorResponse([
diff --git a/mailpoet/lib/Newsletter/NewsletterValidator.php b/mailpoet/lib/Newsletter/NewsletterValidator.php
index 085803f98f..43b4d2786f 100644
--- a/mailpoet/lib/Newsletter/NewsletterValidator.php
+++ b/mailpoet/lib/Newsletter/NewsletterValidator.php
@@ -5,6 +5,7 @@ namespace MailPoet\Newsletter;
 use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Services\Bridge;
 use MailPoet\Settings\TrackingConfig;
+use MailPoet\Util\License\Features\Subscribers as SubscribersFeature;
 use MailPoet\Validator\ValidationException;
 
 class NewsletterValidator {
@@ -15,16 +16,22 @@ class NewsletterValidator {
   /** @var TrackingConfig */
   private $trackingConfig;
 
+  /** @var SubscribersFeature */
+  private $subscribersFeature;
+
   public function __construct(
     Bridge $bridge,
-    TrackingConfig $trackingConfig
+    TrackingConfig $trackingConfig,
+    SubscribersFeature $subscribersFeature
   ) {
     $this->bridge = $bridge;
     $this->trackingConfig = $trackingConfig;
+    $this->subscribersFeature = $subscribersFeature;
   }
   
   public function validate(NewsletterEntity $newsletterEntity): ?string {
     try {
+      $this->validateSubscriberLimit();
       $this->validateBody($newsletterEntity);
       $this->validateUnsubscribeRequirements($newsletterEntity);
       $this->validateReEngagementRequirements($newsletterEntity);
@@ -88,4 +95,10 @@ class NewsletterValidator {
       throw new ValidationException('Please add an “Automatic Latest Content” widget to the email from the right sidebar.');
     }
   }
+
+  private function validateSubscriberLimit(): void {
+    if ($this->subscribersFeature->check()) {
+      throw new ValidationException('Subscribers limit reached.');
+    }
+  }
 }
diff --git a/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php b/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php
index 956ec41752..b860da17be 100644
--- a/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php
+++ b/mailpoet/tests/integration/API/JSON/v1/NewslettersTest.php
@@ -19,18 +19,14 @@ use MailPoet\Entities\SegmentEntity;
 use MailPoet\Entities\SendingQueueEntity;
 use MailPoet\Entities\SubscriberEntity;
 use MailPoet\Entities\SubscriberSegmentEntity;
-use MailPoet\Listing\Handler;
 use MailPoet\Models\ScheduledTask;
 use MailPoet\Models\SendingQueue;
-use MailPoet\Newsletter\Listing\NewsletterListingRepository;
-use MailPoet\Newsletter\NewsletterSaveController;
 use MailPoet\Newsletter\NewslettersRepository;
 use MailPoet\Newsletter\NewsletterValidator;
 use MailPoet\Newsletter\Options\NewsletterOptionFieldsRepository;
 use MailPoet\Newsletter\Options\NewsletterOptionsRepository;
 use MailPoet\Newsletter\Preview\SendPreviewController;
 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;
@@ -41,7 +37,7 @@ use MailPoet\Segments\SegmentsRepository;
 use MailPoet\Settings\SettingsController;
 use MailPoet\Tasks\Sending as SendingTask;
 use MailPoet\Test\DataFactories\Newsletter;
-use MailPoet\Util\License\Features\Subscribers as SubscribersFeature;
+use MailPoet\Util\License\Features\Subscribers;
 use MailPoet\WooCommerce\Helper as WCHelper;
 use MailPoet\WP\Emoji;
 use MailPoet\WP\Functions as WPFunctions;
@@ -183,7 +179,6 @@ class NewslettersTest extends \MailPoetTest {
     $this->endpoint = $this->createNewslettersEndpointWithMocks([
       'wp' => $wp,
       'cronHelper' => $this->cronHelper,
-      'subscribersFeature' => Stub::make(SubscribersFeature::class),
     ]);
     $response = $this->endpoint->get(['id' => $this->newsletter->getId()]);
 
@@ -233,7 +228,9 @@ class NewslettersTest extends \MailPoetTest {
   public function testItReturnsErrorIfSubscribersLimitReached() {
     $endpoint = $this->createNewslettersEndpointWithMocks([
       'cronHelper' => $this->cronHelper,
-      'subscribersFeature' => Stub::make(SubscribersFeature::class, ['check' => true]),
+      'newsletterValidator' => $this->getServiceWithOverrides(NewsletterValidator::class, [
+        'subscribersFeature' => Stub::make(Subscribers::class, ['check' => true])
+      ])
     ]);
     $res = $endpoint->setStatus([
       'id' => $this->newsletter->getId(),
@@ -375,7 +372,6 @@ class NewslettersTest extends \MailPoetTest {
     $this->endpoint = $this->createNewslettersEndpointWithMocks([
       'wp' => $wp,
       'cronHelper' => $this->cronHelper,
-      'subscribersFeature' => Stub::make(SubscribersFeature::class),
     ]);
 
     $response = $this->endpoint->duplicate(['id' => $this->newsletter->getId()]);
@@ -647,7 +643,6 @@ class NewslettersTest extends \MailPoetTest {
       'wp' => $wp,
       'cronHelper' => $this->cronHelper,
       'emoji' => $emoji,
-      'subscribersFeature' => Stub::make(SubscribersFeature::class),
     ]);
 
     $response = $this->endpoint->showPreview($data);
@@ -679,23 +674,7 @@ class NewslettersTest extends \MailPoetTest {
   }
 
   private function createNewslettersEndpointWithMocks(array $mocks): Newsletters {
-    return new Newsletters(
-      $this->diContainer->get(Handler::class),
-      $mocks['wp'] ?? $this->diContainer->get(WPFunctions::class),
-      $this->diContainer->get(SettingsController::class),
-      $mocks['cronHelper'] ?? $this->diContainer->get(CronHelper::class),
-      $this->diContainer->get(NewslettersRepository::class),
-      $this->diContainer->get(NewsletterListingRepository::class),
-      $this->diContainer->get(NewslettersResponseBuilder::class),
-      $this->diContainer->get(PostNotificationScheduler::class),
-      $mocks['emoji'] ?? $this->diContainer->get(Emoji::class),
-      $mocks['subscribersFeature'] ?? $this->diContainer->get(SubscribersFeature::class),
-      $mocks['sendPreviewController'] ?? $this->diContainer->get(SendPreviewController::class),
-      $this->diContainer->get(NewsletterSaveController::class),
-      $this->diContainer->get(Url::class),
-      $this->scheduler,
-      $this->diContainer->get(NewsletterValidator::class)
-    );
+    return $this->getServiceWithOverrides(Newsletters::class, $mocks);
   }
 
   private function createNewsletterOptionField(string $name, string $type): NewsletterOptionFieldEntity {
diff --git a/mailpoet/tests/integration/API/JSON/v1/SendingQueueTest.php b/mailpoet/tests/integration/API/JSON/v1/SendingQueueTest.php
index aec022aa52..e62dc5f5b6 100644
--- a/mailpoet/tests/integration/API/JSON/v1/SendingQueueTest.php
+++ b/mailpoet/tests/integration/API/JSON/v1/SendingQueueTest.php
@@ -23,8 +23,8 @@ use MailPoet\Segments\SubscribersFinder;
 use MailPoet\Services\Bridge;
 use MailPoet\Settings\SettingsController;
 use MailPoet\Settings\SettingsRepository;
-use MailPoet\Settings\TrackingConfig;
 use MailPoet\Tasks\Sending;
+use MailPoet\Test\DataFactories\Newsletter;
 use MailPoet\Util\License\Features\Subscribers as SubscribersFeature;
 
 class SendingQueueTest extends \MailPoetTest {
@@ -141,38 +141,27 @@ class SendingQueueTest extends \MailPoetTest {
   }
 
   public function testItRejectsNewsletterWithoutUnsubscribeLink() {
-    $newsletter = new NewsletterEntity();
-    $newsletter->setSubject('subject');
-    $newsletter->setType(NewsletterEntity::TYPE_STANDARD);
-    $newsletter->setBody([
-      'content' =>
-        [
-          'type' => 'container',
-          'columnLayout' => false,
-          'orientation' => 'vertical',
-          'blocks' => [
-            [
-              'type' => 'header',
-              'link' => '',
-              'text' => 'Hello!'
+    $newsletter = (new Newsletter())->withBody([
+        'content' =>
+          [
+            'type' => 'container',
+            'columnLayout' => false,
+            'orientation' => 'vertical',
+            'blocks' => [
+              [
+                'type' => 'header',
+                'link' => '',
+                'text' => 'Hello!'
+              ]
             ]
           ]
         ]
+      )->create();
+    $sendingQueue = $this->getServiceWithOverrides(SendingQueueAPI::class, [
+      'newsletterValidator' => $this->getServiceWithOverrides(NewsletterValidator::class, [
+        'bridge' => Stub::make(Bridge::class, ['isMailpoetSendingServiceEnabled' => true])
+      ])
     ]);
-    $this->entityManager->persist($newsletter);
-    $this->entityManager->flush();
-    $sendingQueue = new SendingQueueAPI(
-      $this->diContainer->get(SubscribersFeature::class),
-      $this->diContainer->get(NewslettersRepository::class),
-      $this->diContainer->get(SendingQueuesRepository::class),
-      $this->diContainer->get(SubscribersFinder::class),
-      $this->diContainer->get(ScheduledTasksRepository::class),
-      $this->diContainer->get(MailerFactory::class),
-      $this->diContainer->get(Scheduler::class),
-      new NewsletterValidator(Stub::make(Bridge::class, [
-        'isMailpoetSendingServiceEnabled' => true,
-      ]), $this->diContainer->get(TrackingConfig::class))
-    );
     $response = $sendingQueue->add(['newsletter_id' => $newsletter->getId()]);
     $response = $response->getData();
     expect($response['errors'][0])->array();
diff --git a/mailpoet/tests/integration/Newsletter/NewsletterValidatorTest.php b/mailpoet/tests/integration/Newsletter/NewsletterValidatorTest.php
index 392980f75e..ab70596a8b 100644
--- a/mailpoet/tests/integration/Newsletter/NewsletterValidatorTest.php
+++ b/mailpoet/tests/integration/Newsletter/NewsletterValidatorTest.php
@@ -7,6 +7,7 @@ use MailPoet\Newsletter\NewsletterValidator;
 use MailPoet\Services\Bridge;
 use MailPoet\Settings\TrackingConfig;
 use MailPoet\Test\DataFactories\Newsletter;
+use MailPoet\Util\License\Features\Subscribers;
 
 class NewsletterValidatorTest extends \MailPoetTest {
   /** @var NewsletterValidator */
@@ -106,4 +107,13 @@ class NewsletterValidatorTest extends \MailPoetTest {
     expect($validationError)->null();
   }
 
+  public function testItIsNotValidIfSubscriberLimitReached() {
+    $newsletter = (new Newsletter())->withDefaultBody()->create();
+    $validator = $this->getServiceWithOverrides(NewsletterValidator::class, [
+      'subscribersFeature' => Stub::make(Subscribers::class, ['check' => true])
+    ]);
+    $validationError = $validator->validate($newsletter);
+    expect($validationError)->equals('Subscribers limit reached.');
+  }
+
 }