diff --git a/lib/Subscribers/InactiveSubscribersController.php b/lib/Subscribers/InactiveSubscribersController.php
index 70b8699248..77366ae2d2 100644
--- a/lib/Subscribers/InactiveSubscribersController.php
+++ b/lib/Subscribers/InactiveSubscribersController.php
@@ -1,28 +1,33 @@
-<?php
+<?php declare(strict_types = 1);
 
 namespace MailPoet\Subscribers;
 
 use MailPoet\Config\MP2Migrator;
-use MailPoet\Models\ScheduledTask;
-use MailPoet\Models\ScheduledTaskSubscriber;
-use MailPoet\Models\SendingQueue;
-use MailPoet\Models\StatisticsOpens;
-use MailPoet\Models\Subscriber;
+use MailPoet\Entities\ScheduledTaskEntity;
+use MailPoet\Entities\ScheduledTaskSubscriberEntity;
+use MailPoet\Entities\SendingQueueEntity;
+use MailPoet\Entities\SubscriberEntity;
 use MailPoet\Settings\SettingsRepository;
 use MailPoetVendor\Carbon\Carbon;
-use MailPoetVendor\Idiorm\ORM;
+use MailPoetVendor\Doctrine\DBAL\Connection;
+use MailPoetVendor\Doctrine\ORM\EntityManager;
 
 class InactiveSubscribersController {
 
-  private $inactivesTaskIdsTableCreated = false;
+  private $inactiveTaskIdsTableCreated = false;
 
   /** @var SettingsRepository */
   private $settingsRepository;
 
+  /** @var EntityManager */
+  private $entityManager;
+
   public function __construct(
+    EntityManager $entityManager,
     SettingsRepository $settingsRepository
   ) {
     $this->settingsRepository = $settingsRepository;
+    $this->entityManager = $entityManager;
   }
 
   public function markInactiveSubscribers(int $daysToInactive, int $batchSize, ?int $startId = null) {
@@ -35,15 +40,15 @@ class InactiveSubscribersController {
     return $this->activateSubscribers($thresholdDate, $batchSize);
   }
 
-  /**
-   * @return void
-   */
-  public function reactivateInactiveSubscribers() {
-    $reactivateAllInactiveQuery = sprintf(
-      "UPDATE %s SET status = '%s' WHERE status = '%s';",
-      Subscriber::$_table, Subscriber::STATUS_SUBSCRIBED, Subscriber::STATUS_INACTIVE
-    );
-    ORM::rawExecute($reactivateAllInactiveQuery);
+  public function reactivateInactiveSubscribers(): void {
+    $subscribersTable = $this->entityManager->getClassMetadata(SubscriberEntity::class)->getTableName();
+    $reactivateAllInactiveQuery = "
+      UPDATE {$subscribersTable} SET status = :statusSubscribed WHERE status = :statusInactive
+    ";
+    $this->entityManager->getConnection()->executeQuery($reactivateAllInactiveQuery, [
+      'statusSubscribed' => SubscriberEntity::STATUS_SUBSCRIBED,
+      'statusInactive' => SubscriberEntity::STATUS_INACTIVE,
+    ]);
   }
 
   private function getThresholdDate(int $daysToInactive): Carbon {
@@ -55,11 +60,11 @@ class InactiveSubscribersController {
    * @return int|bool
    */
   private function deactivateSubscribers(Carbon $thresholdDate, int $batchSize, ?int $startId = null) {
-    $subscribersTable = Subscriber::$_table;
-    $scheduledTasksTable = ScheduledTask::$_table;
-    $scheduledTaskSubcribresTable = ScheduledTaskSubscriber::$_table;
-    $statisticsOpensTable = StatisticsOpens::$_table;
-    $sendingQueuesTable = SendingQueue::$_table;
+    $subscribersTable = $this->entityManager->getClassMetadata(SubscriberEntity::class)->getTableName();
+    $scheduledTasksTable = $this->entityManager->getClassMetadata(ScheduledTaskEntity::class)->getTableName();
+    $scheduledTaskSubscribersTable = $this->entityManager->getClassMetadata(ScheduledTaskSubscriberEntity::class)->getTableName();
+    $sendingQueuesTable = $this->entityManager->getClassMetadata(SendingQueueEntity::class)->getTableName();
+    $connection = $this->entityManager->getConnection();
 
     $thresholdDateIso = $thresholdDate->toDateTimeString();
     $dayAgo = new Carbon();
@@ -74,46 +79,59 @@ class InactiveSubscribersController {
 
     // We take into account only emails which have at least one opening tracked
     // to ensure that tracking was enabled for the particular email
-    if (!$this->inactivesTaskIdsTableCreated) {
-      $inactivesTaskIdsTable = sprintf("
-      CREATE TEMPORARY TABLE IF NOT EXISTS inactives_task_ids
-      (INDEX task_id_ids (id))
-      SELECT DISTINCT task_id as id FROM $sendingQueuesTable as sq
-        JOIN $scheduledTasksTable as st ON sq.task_id = st.id
-        WHERE st.processed_at > '%s'
-        AND st.processed_at < '%s'",
-        $thresholdDateIso, $dayAgoIso
-      );
-      ORM::rawExecute($inactivesTaskIdsTable);
-      $this->inactivesTaskIdsTableCreated = true;
+    $inactiveTaskIdsTable = 'inactive_task_ids';
+    if (!$this->inactiveTaskIdsTableCreated) {
+      $inactiveTaskIdsTableSql = "
+        CREATE TEMPORARY TABLE IF NOT EXISTS {$inactiveTaskIdsTable}
+        (INDEX task_id_ids (id))
+        SELECT DISTINCT task_id as id FROM {$sendingQueuesTable} as sq
+          JOIN {$scheduledTasksTable} as st ON sq.task_id = st.id
+          WHERE st.processed_at > :thresholdDate
+          AND st.processed_at < :dayAgo
+      ";
+      $connection->executeQuery($inactiveTaskIdsTableSql, [
+        'thresholdDate' => $thresholdDateIso,
+        'dayAgo' => $dayAgoIso,
+      ]);
+      $this->inactiveTaskIdsTableCreated = true;
     }
 
     // Select subscribers who received a recent tracked email but didn't open it
     $startId = (int)$startId;
     $endId = $startId + $batchSize;
     $inactiveSubscriberIdsTmpTable = 'inactive_subscriber_ids';
-    ORM::rawExecute("
-      CREATE TEMPORARY TABLE IF NOT EXISTS $inactiveSubscriberIdsTmpTable
+    $connection->executeQuery("
+      CREATE TEMPORARY TABLE IF NOT EXISTS {$inactiveSubscriberIdsTmpTable}
       (UNIQUE subscriber_id (id))
-      SELECT DISTINCT s.id FROM $subscribersTable as s
-        JOIN $scheduledTaskSubcribresTable as sts USE INDEX (subscriber_id) ON s.id = sts.subscriber_id
-        JOIN inactives_task_ids task_ids ON task_ids.id = sts.task_id
-      WHERE s.last_subscribed_at < ? AND s.status = ? AND s.id >= ? AND s.id < ?",
-      [$thresholdDateIso, Subscriber::STATUS_SUBSCRIBED, $startId, $endId]
-    );
+      SELECT DISTINCT s.id FROM {$subscribersTable} as s
+        JOIN {$scheduledTaskSubscribersTable} as sts USE INDEX (subscriber_id) ON s.id = sts.subscriber_id
+        JOIN {$inactiveTaskIdsTable} task_ids ON task_ids.id = sts.task_id
+      WHERE s.last_subscribed_at < :thresholdDate
+        AND s.status = :status
+        AND s.id >= :startId
+        AND s.id < :endId
+    ",
+      [
+        'thresholdDate' => $thresholdDateIso,
+        'status' => SubscriberEntity::STATUS_SUBSCRIBED,
+        'startId' => $startId,
+        'endId' => $endId,
+    ]);
 
-    $idsToDeactivate = ORM::forTable($inactiveSubscriberIdsTmpTable)->rawQuery("
-      SELECT isi.id FROM $inactiveSubscriberIdsTmpTable isi
-        LEFT OUTER JOIN $subscribersTable as s ON isi.id = s.id AND GREATEST(
+    $result = $connection->executeQuery("
+      SELECT isi.id FROM {$inactiveSubscriberIdsTmpTable} isi
+        LEFT OUTER JOIN {$subscribersTable} as s ON isi.id = s.id AND GREATEST(
           COALESCE(s.last_engagement_at, 0),
           COALESCE(s.last_subscribed_at, 0),
           COALESCE(s.created_at, 0)
-        ) > ?
-        WHERE s.id IS NULL",
-      [$thresholdDateIso]
-    )->findArray();
+        ) > :thresholdDate
+      WHERE s.id IS NULL
+    ", [
+      'thresholdDate' => $thresholdDateIso,
+    ]);
+    $idsToDeactivate = $result->fetchAllAssociative();
 
-    ORM::rawExecute("DROP TABLE $inactiveSubscriberIdsTmpTable");
+    $connection->executeQuery("DROP TABLE {$inactiveSubscriberIdsTmpTable}");
 
     $idsToDeactivate = array_map(
       function ($id) {
@@ -124,39 +142,50 @@ class InactiveSubscribersController {
     if (!count($idsToDeactivate)) {
       return 0;
     }
-    ORM::rawExecute(sprintf(
-      "UPDATE %s SET status='" . Subscriber::STATUS_INACTIVE . "' WHERE id IN (%s);",
-      $subscribersTable,
-      implode(',', $idsToDeactivate)
-    ));
+    $connection->executeQuery("UPDATE {$subscribersTable} SET status = :statusInactive WHERE id IN (:idsToDeactivate)", [
+      'statusInactive' => SubscriberEntity::STATUS_INACTIVE,
+      'idsToDeactivate' => $idsToDeactivate,
+    ], ['idsToDeactivate' => Connection::PARAM_INT_ARRAY]);
     return count($idsToDeactivate);
   }
 
   private function activateSubscribers(Carbon $thresholdDate, int $batchSize): int {
-    $subscribersTable = Subscriber::$_table;
-    $statsOpensTable = StatisticsOpens::$_table;
+    $subscribersTable = $this->entityManager->getClassMetadata(SubscriberEntity::class)->getTableName();
+    $connection = $this->entityManager->getConnection();
 
     $mp2MigrationDate = $this->getMP2MigrationDate();
     if ($mp2MigrationDate && $mp2MigrationDate > $thresholdDate) {
       // If MP2 migration occurred during detection interval re-activate all subscribers created before migration
-      $idsToActivate = ORM::forTable($subscribersTable)->select("$subscribersTable.id")
-        ->whereLt("$subscribersTable.created_at", $mp2MigrationDate)
-        ->where("$subscribersTable.status", Subscriber::STATUS_INACTIVE)
-        ->limit($batchSize)
-        ->findArray();
+      $idsToActivate = $connection->executeQuery("
+        SELECT id
+        FROM {$subscribersTable}
+        WHERE created_at < :migrationDate
+          AND status = :statusInactive
+        LIMIT :batchSize
+        ", [
+          'migrationDate' => $mp2MigrationDate,
+          'statusInactive' => SubscriberEntity::STATUS_INACTIVE,
+          'batchSize' => $batchSize,
+      ], ['batchSize' => \PDO::PARAM_INT])->fetchAllAssociative();
     } else {
-      $idsToActivate = ORM::forTable($subscribersTable)->select("$subscribersTable.id")
-        ->leftOuterJoin($subscribersTable, "$subscribersTable.id = s2.id AND GREATEST(
+      $idsToActivate = $connection->executeQuery("
+        SELECT s.id
+        FROM {$subscribersTable} s
+        LEFT OUTER JOIN {$subscribersTable} s2 ON s.id = s2.id AND GREATEST(
           COALESCE(s2.last_engagement_at, 0),
           COALESCE(s2.last_subscribed_at, 0),
           COALESCE(s2.created_at, 0)
-        ) > '$thresholdDate'", 's2')
-        ->whereLt("$subscribersTable.last_subscribed_at", $thresholdDate)
-        ->where("$subscribersTable.status", Subscriber::STATUS_INACTIVE)
-        ->whereRaw("s2.id IS NOT NULL")
-        ->limit($batchSize)
-        ->groupByExpr("$subscribersTable.id")
-        ->findArray();
+        ) > :thresholdDate
+        WHERE s.last_subscribed_at < :thresholdDate
+          AND s.status = :statusInactive
+          AND s2.id IS NOT NULL
+        GROUP BY s.id
+        LIMIT :batchSize
+      ", [
+        'thresholdDate' => $thresholdDate,
+        'statusInactive' => SubscriberEntity::STATUS_INACTIVE,
+        'batchSize' => $batchSize,
+      ], ['batchSize' => \PDO::PARAM_INT])->fetchAllAssociative();
     }
 
     $idsToActivate = array_map(
@@ -167,11 +196,10 @@ class InactiveSubscribersController {
     if (!count($idsToActivate)) {
       return 0;
     }
-    ORM::rawExecute(sprintf(
-      "UPDATE %s SET status='" . Subscriber::STATUS_SUBSCRIBED . "' WHERE id IN (%s);",
-      $subscribersTable,
-      implode(',', $idsToActivate)
-    ));
+    $connection->executeQuery("UPDATE {$subscribersTable} SET status = :statusSubscribed WHERE id IN (:idsToActivate)", [
+      'statusSubscribed' => SubscriberEntity::STATUS_SUBSCRIBED,
+      'idsToActivate' => $idsToActivate,
+    ], ['idsToActivate' => Connection::PARAM_INT_ARRAY]);
     return count($idsToActivate);
   }