diff --git a/mailpoet/lib/API/JSON/v1/Help.php b/mailpoet/lib/API/JSON/v1/Help.php
index c65c93dc6a..f476b3805f 100644
--- a/mailpoet/lib/API/JSON/v1/Help.php
+++ b/mailpoet/lib/API/JSON/v1/Help.php
@@ -8,6 +8,7 @@ use MailPoet\API\JSON\Response;
 use MailPoet\Config\AccessControl;
 use MailPoet\Entities\ScheduledTaskEntity;
 use MailPoet\Newsletter\Sending\ScheduledTasksRepository;
+use MailPoet\Util\DataInconsistency\DataInconsistencyController;
 
 class Help extends APIEndpoint {
 
@@ -16,11 +17,14 @@ class Help extends APIEndpoint {
   ];
 
   private ScheduledTasksRepository $scheduledTasksRepository;
+  private DataInconsistencyController $dataInconsistencyController;
 
   public function __construct(
-    ScheduledTasksRepository $scheduledTasksRepository
+    ScheduledTasksRepository $scheduledTasksRepository,
+    DataInconsistencyController $dataInconsistencyController
   ) {
     $this->scheduledTasksRepository = $scheduledTasksRepository;
+    $this->dataInconsistencyController = $dataInconsistencyController;
   }
 
   public function cancelTask($data): Response {
@@ -59,6 +63,15 @@ class Help extends APIEndpoint {
     }
   }
 
+  public function fixInconsistentData($data): Response {
+    try {
+      $this->dataInconsistencyController->fixInconsistentData($data['inconsistency'] ?? '');
+    } catch (\Exception $e) {
+      return $this->badRequest([ApiError::BAD_REQUEST => $e->getMessage()]);
+    }
+    return $this->successResponse($this->dataInconsistencyController->getInconsistentDataStatus());
+  }
+
   private function validateTaskId($data): void {
     $isValid = isset($data['id']) && is_numeric($data['id']);
     if (!$isValid) {
diff --git a/mailpoet/lib/Util/DataInconsistency/DataInconsistencyController.php b/mailpoet/lib/Util/DataInconsistency/DataInconsistencyController.php
index 1103a4730e..ba65323611 100644
--- a/mailpoet/lib/Util/DataInconsistency/DataInconsistencyController.php
+++ b/mailpoet/lib/Util/DataInconsistency/DataInconsistencyController.php
@@ -2,8 +2,14 @@
 
 namespace MailPoet\Util\DataInconsistency;
 
+use MailPoet\UnexpectedValueException;
+
 class DataInconsistencyController {
-  const ORPHANED_TASKS = 'orphaned_tasks';
+  const ORPHANED_SENDING_TASKS = 'orphaned_sending_tasks';
+
+  const SUPPORTED_INCONSISTENCY_CHECKS = [
+    self::ORPHANED_SENDING_TASKS,
+  ];
 
   private DataInconsistencyRepository $repository;
 
@@ -15,9 +21,19 @@ class DataInconsistencyController {
 
   public function getInconsistentDataStatus(): array {
     $result = [
-      self::ORPHANED_TASKS => $this->repository->getOrphanedSendingTasksCount(),
+      self::ORPHANED_SENDING_TASKS => $this->repository->getOrphanedSendingTasksCount(),
     ];
     $result['total'] = array_sum($result);
     return $result;
   }
+
+  public function fixInconsistentData(string $inconsistency): void {
+    if (!in_array($inconsistency, self::SUPPORTED_INCONSISTENCY_CHECKS, true)) {
+      throw new UnexpectedValueException(__('Unsupported data inconsistency check.', 'mailpoet'));
+    }
+    if ($inconsistency === self::ORPHANED_SENDING_TASKS) {
+      $this->repository->cleanupOrphanedSendingTasks();
+      return;
+    }
+  }
 }
diff --git a/mailpoet/tests/integration/API/JSON/v1/HelpTest.php b/mailpoet/tests/integration/API/JSON/v1/HelpTest.php
index f752f4af1b..e6b47ce138 100644
--- a/mailpoet/tests/integration/API/JSON/v1/HelpTest.php
+++ b/mailpoet/tests/integration/API/JSON/v1/HelpTest.php
@@ -8,6 +8,7 @@ use MailPoet\API\JSON\v1\Help;
 use MailPoet\Entities\ScheduledTaskEntity;
 use MailPoet\Newsletter\Sending\ScheduledTasksRepository;
 use MailPoet\Test\DataFactories\ScheduledTask as ScheduledTaskFactory;
+use MailPoet\Util\DataInconsistency\DataInconsistencyController;
 use MailPoetVendor\Carbon\Carbon;
 
 class HelpTest extends \MailPoetTest {
@@ -21,7 +22,7 @@ class HelpTest extends \MailPoetTest {
     $this->scheduledTasksRepository = $this->diContainer->get(ScheduledTasksRepository::class);
   }
 
-  public function testItReturnsErrorWhenIdIsMissing() {
+  public function testItReturnsErrorWhenIdIsMissing(): void {
     /** @var ErrorResponse $response */
     $response = $this->endpoint->cancelTask([]);
     verify($response)->instanceOf(ErrorResponse::class);
@@ -35,7 +36,7 @@ class HelpTest extends \MailPoetTest {
     verify($response->errors[0]['message'])->equals('Invalid or missing parameter `id`.');
   }
 
-  public function testItReturnsErrorWhenTaskDoesntExist() {
+  public function testItReturnsErrorWhenTaskDoesntExist(): void {
     /** @var ErrorResponse $response */
     $response = $this->endpoint->cancelTask(['id' => 99999]);
     verify($response)->instanceOf(ErrorResponse::class);
@@ -49,7 +50,7 @@ class HelpTest extends \MailPoetTest {
     verify($response->errors[0]['message'])->equals('Task not found.');
   }
 
-  public function testItReturnsErrorWhenCancellingCompletedTask() {
+  public function testItReturnsErrorWhenCancellingCompletedTask(): void {
     $task = (new ScheduledTaskFactory())->create('sending', ScheduledTaskEntity::STATUS_COMPLETED, new \DateTime());
     /** @var ErrorResponse $response */
     $response = $this->endpoint->cancelTask(['id' => $task->getId()]);
@@ -58,7 +59,7 @@ class HelpTest extends \MailPoetTest {
     verify($response->errors[0]['message'])->equals('Only scheduled and running tasks can be cancelled');
   }
 
-  public function testItReturnsErrorWhenReschedulingCompletedTask() {
+  public function testItReturnsErrorWhenReschedulingCompletedTask(): void {
     $task = (new ScheduledTaskFactory())->create('sending', ScheduledTaskEntity::STATUS_COMPLETED, new \DateTime());
     /** @var ErrorResponse $response */
     $response = $this->endpoint->rescheduleTask(['id' => $task->getId()]);
@@ -67,7 +68,7 @@ class HelpTest extends \MailPoetTest {
     verify($response->errors[0]['message'])->equals('Only cancelled tasks can be rescheduled');
   }
 
-  public function testItCanCancelScheduledTask() {
+  public function testItCanCancelScheduledTask(): void {
     $task = (new ScheduledTaskFactory())->create('sending', ScheduledTaskEntity::STATUS_SCHEDULED, new \DateTime());
     $response = $this->endpoint->cancelTask(['id' => $task->getId()]);
     verify($response)->instanceOf(APIResponse::class);
@@ -82,7 +83,7 @@ class HelpTest extends \MailPoetTest {
     }
   }
 
-  public function testItCanCancelRunningTask() {
+  public function testItCanCancelRunningTask(): void {
     $task = (new ScheduledTaskFactory())->create('sending', null, new \DateTime());
     $response = $this->endpoint->cancelTask(['id' => $task->getId()]);
     verify($response)->instanceOf(APIResponse::class);
@@ -97,7 +98,7 @@ class HelpTest extends \MailPoetTest {
     }
   }
 
-  public function testItCanRescheduleTaskInFuture() {
+  public function testItCanRescheduleTaskInFuture(): void {
     $futureDate = Carbon::now()->addDay();
     $task = (new ScheduledTaskFactory())->create('sending', ScheduledTaskEntity::STATUS_CANCELLED, $futureDate);
     $response = $this->endpoint->rescheduleTask(['id' => $task->getId()]);
@@ -112,7 +113,7 @@ class HelpTest extends \MailPoetTest {
     }
   }
 
-  public function testItCanRescheduleTaskInProgress() {
+  public function testItCanRescheduleTaskInProgress(): void {
     $pastDate = Carbon::now()->subDay();
     $task = (new ScheduledTaskFactory())->create('sending', ScheduledTaskEntity::STATUS_CANCELLED, $pastDate);
     $response = $this->endpoint->rescheduleTask(['id' => $task->getId()]);
@@ -126,4 +127,15 @@ class HelpTest extends \MailPoetTest {
       verify($task->getCancelledAt())->null();
     }
   }
+
+  public function testItFixesInconsistentData(): void {
+    $task = (new ScheduledTaskFactory())->create('sending', ScheduledTaskEntity::STATUS_SCHEDULED);
+    $this->entityManager->detach($task);
+
+    $response = (array)$this->endpoint->fixInconsistentData(['inconsistency' => DataInconsistencyController::ORPHANED_SENDING_TASKS]);
+    $task = $this->scheduledTasksRepository->findOneById($task->getId());
+    verify($task)->null();
+    verify($response['data']['total'] ?? null)->equals(0);
+    verify($response['data'][DataInconsistencyController::ORPHANED_SENDING_TASKS] ?? null)->equals(0);
+  }
 }