diff --git a/lib/Models/Form.php b/lib/Models/Form.php
index 272584a730..0e3a5ce9e5 100644
--- a/lib/Models/Form.php
+++ b/lib/Models/Form.php
@@ -2,143 +2,30 @@
 
 namespace MailPoet\Models;
 
-use MailPoet\Settings\SettingsController;
-use MailPoet\WP\Functions as WPFunctions;
-
 /**
- * @property string|array $settings
- * @property string|array $body
- * @property string $name
- * @property string $status
- * @property string|null $deletedAt
+ * @deprecated This model is deprecated. Use \MailPoet\Form\FormsRepository and respective Doctrine entities instead.
+ * This class can be removed after 2022-04-15
  */
-
 class Form extends Model {
   public static $_table = MP_FORMS_TABLE; // phpcs:ignore PSR2.Classes.PropertyDeclaration
 
-  public function getSettings() {
-    if (is_array($this->settings) || $this->settings === null) {
-      return $this->settings;
-    }
-    return WPFunctions::get()->isSerialized($this->settings) ? unserialize($this->settings) : $this->settings;
+  /**
+   * @deprecated This is here for displaying the deprecation warning for properties.
+   */
+  public function __get($key) {
+    self::deprecationError('property "' . $key . '"');
+    return parent::__get($key);
   }
 
-  public function getBody() {
-    if (is_array($this->body) || $this->body === null) {
-      return $this->body;
-    }
-    return WPFunctions::get()->isSerialized($this->body) ? unserialize($this->body) : $this->body;
+  /**
+   * @deprecated This is here for displaying the deprecation warning for static calls.
+   */
+  public static function __callStatic($name, $arguments) {
+    self::deprecationError($name);
+    return parent::__callStatic($name, $arguments);
   }
 
-  public function asArray() {
-    $model = parent::asArray();
-
-    $model['body'] = $this->getBody();
-    $model['settings'] = $this->getSettings();
-
-    return $model;
-  }
-
-  public function save() {
-    $this->set('body', (is_string($this->body) && is_serialized($this->body))
-      ? $this->body
-      : serialize($this->body)
-    );
-    $this->set('settings', (is_string($this->settings) && is_serialized($this->settings))
-      ? $this->settings
-      : serialize($this->settings)
-    );
-    return parent::save();
-  }
-
-  public function getFieldList(array $body = null) {
-    $body = $body ?? $this->getBody();
-    if (empty($body)) {
-      return false;
-    }
-
-    $skippedTypes = ['html', 'divider', 'submit'];
-    $nestedTypes = ['column', 'columns'];
-    $fields = [];
-
-    foreach ((array)$body as $field) {
-      if (!empty($field['type'])
-        && in_array($field['type'], $nestedTypes)
-        && !empty($field['body'])
-      ) {
-        $nestedFields = $this->getFieldList($field['body']);
-        if ($nestedFields) {
-          $fields = array_merge($fields, $nestedFields);
-        }
-        continue;
-      }
-
-      if (empty($field['id'])
-        || empty($field['type'])
-        || in_array($field['type'], $skippedTypes)
-      ) {
-        continue;
-      }
-
-      if ((int)$field['id'] > 0) {
-        $fields[] = 'cf_' . $field['id'];
-      } else {
-        $fields[] = $field['id'];
-      }
-    }
-
-    return $fields ?: false;
-  }
-
-  public static function search($orm, $search = '') {
-    return $orm->whereLike('name', '%' . $search . '%');
-  }
-
-  public static function groups() {
-    return [
-      [
-        'name' => 'all',
-        'label' => __('All', 'mailpoet'),
-        'count' => Form::getPublished()->count(),
-      ],
-      [
-        'name' => 'trash',
-        'label' => __('Trash', 'mailpoet'),
-        'count' => Form::getTrashed()->count(),
-      ],
-    ];
-  }
-
-  public static function groupBy($orm, $group = null) {
-    if ($group === 'trash') {
-      return $orm->whereNotNull('deleted_at');
-    }
-    return $orm->whereNull('deleted_at');
-  }
-
-  public static function getDefaultSuccessMessage() {
-    $settings = SettingsController::getInstance();
-    if ($settings->get('signup_confirmation.enabled')) {
-      return __('Check your inbox or spam folder to confirm your subscription.', 'mailpoet');
-    }
-    return __('You’ve been successfully subscribed to our newsletter!', 'mailpoet');
-  }
-
-  public static function updateSuccessMessages() {
-    $rightMessage = self::getDefaultSuccessMessage();
-    $wrongMessage = (
-      $rightMessage === __('Check your inbox or spam folder to confirm your subscription.', 'mailpoet')
-      ? __('You’ve been successfully subscribed to our newsletter!', 'mailpoet')
-      : __('Check your inbox or spam folder to confirm your subscription.', 'mailpoet')
-    );
-    $forms = self::findMany();
-    foreach ($forms as $form) {
-      $settings = $form->getSettings();
-      if (isset($settings['success_message']) && $settings['success_message'] === $wrongMessage) {
-        $settings['success_message'] = $rightMessage;
-        $form->set('settings', serialize($settings));
-        $form->save();
-      }
-    }
+  private static function deprecationError($methodName) {
+    trigger_error('Calling ' . $methodName . ' is deprecated and will be removed. Use MailPoet\Statistics\StatisticsFormsRepository and respective Doctrine entities instead.', E_USER_DEPRECATED);
   }
 }
diff --git a/tests/integration/Models/FormTest.php b/tests/integration/Models/FormTest.php
deleted file mode 100644
index 3e6f4ccd92..0000000000
--- a/tests/integration/Models/FormTest.php
+++ /dev/null
@@ -1,196 +0,0 @@
-<?php
-
-namespace MailPoet\Test\Models;
-
-use MailPoet\Form\FormMessageController;
-use MailPoet\Models\Form;
-use MailPoet\Settings\SettingsController;
-
-class FormTest extends \MailPoetTest {
-  public $form;
-  /** @var SettingsController */
-  private $settings;
-
-  /** @var FormMessageController */
-  private $messageController;
-
-  public function _before() {
-    parent::_before();
-    $this->settings = SettingsController::getInstance();
-    $this->messageController = $this->diContainer->get(FormMessageController::class);
-    $this->form = Form::createOrUpdate([
-      'name' => 'My Form',
-    ]);
-  }
-
-  public function testItCanBeCreated() {
-    expect($this->form->id() > 0)->true();
-    expect($this->form->getErrors())->false();
-  }
-
-  public function testItCanBeGrouped() {
-    $forms = Form::filter('groupBy', 'all')->findArray();
-    expect($forms)->count(1);
-
-    $forms = Form::filter('groupBy', 'trash')->findArray();
-    expect($forms)->count(0);
-
-    $this->form->trash();
-    $forms = Form::filter('groupBy', 'trash')->findArray();
-    expect($forms)->count(1);
-
-    $forms = Form::filter('groupBy', 'all')->findArray();
-    expect($forms)->count(0);
-
-    $this->form->restore();
-    $forms = Form::filter('groupBy', 'all')->findArray();
-    expect($forms)->count(1);
-  }
-
-  public function testItCanBeSearched() {
-    $form = Form::filter('search', 'my F')->findOne();
-    assert($form instanceof Form);
-    expect($form->name)->equals('My Form');
-  }
-
-  public function testItHasACreatedAtOnCreation() {
-    $form = Form::findOne($this->form->id);
-    assert($form instanceof Form);
-    expect($form->createdAt)->notNull();
-  }
-
-  public function testItHasAnUpdatedAtOnCreation() {
-    $form = Form::findOne($this->form->id);
-    assert($form instanceof Form);
-    expect($form->updatedAt)->equals($form->createdAt);
-  }
-
-  public function testItUpdatesTheUpdatedAtOnUpdate() {
-    $form = Form::findOne($this->form->id);
-    assert($form instanceof Form);
-    $createdAt = $form->createdAt;
-
-    sleep(1);
-
-    $form->name = 'new name';
-    $form->save();
-
-    $updatedForm = Form::findOne($form->id);
-    assert($updatedForm instanceof Form);
-    expect($updatedForm->createdAt)->equals($createdAt);
-    $isTimeUpdated = (
-      $updatedForm->updatedAt > $updatedForm->createdAt
-    );
-    expect($isTimeUpdated)->true();
-  }
-
-  public function testItCanCreateOrUpdate() {
-    $createdForm = Form::createOrUpdate([
-      'name' => 'Created Form',
-    ]);
-    expect($createdForm->id > 0)->true();
-    expect($createdForm->getErrors())->false();
-
-    $form = Form::findOne($createdForm->id);
-    assert($form instanceof Form);
-    expect($form->name)->equals('Created Form');
-
-    $isUpdated = Form::createOrUpdate([
-      'id' => $createdForm->id,
-      'name' => 'Updated Form',
-    ]);
-    $form = Form::findOne($createdForm->id);
-    assert($form instanceof Form);
-    expect($form->name)->equals('Updated Form');
-  }
-
-  public function testItCanProvideAFieldList() {
-    $form = Form::createOrUpdate([
-      'name' => 'My Form',
-      'body' => [
-        [
-          'type' => 'text',
-          'id' => 'email',
-        ],
-        [
-          'type' => 'text',
-          'id' => 2,
-        ],
-        [
-          'type' => 'columns',
-          'body' => [
-            [
-              'type' => 'column',
-              'body' => [
-                [
-                  'type' => 'text',
-                  'id' => 3,
-                ],
-              ],
-            ],
-            [
-              'type' => 'column',
-              'body' => [
-                [
-                  'type' => 'divider',
-                  'id' => 'divider',
-                ],
-              ],
-            ],
-          ],
-        ],
-        [
-          'type' => 'submit',
-          'id' => 'submit',
-        ],
-      ],
-    ]);
-    expect($form->getFieldList())->equals(['email', 'cf_2', 'cf_3']);
-  }
-
-  public function testItUpdatesSuccessMessagesWhenConfirmationIsDisabled() {
-    $default = Form::createOrUpdate([
-      'name' => 'with default message',
-      'settings' => ['success_message' => 'Check your inbox or spam folder to confirm your subscription.'],
-    ]);
-    $custom = Form::createOrUpdate([
-      'name' => 'with custom message',
-      'settings' => ['success_message' => 'Thanks for joining us!'],
-    ]);
-    $this->settings->set('signup_confirmation.enabled', '0');
-    $this->messageController->updateSuccessMessages();
-    $default = Form::findOne($default->id);
-    $custom = Form::findOne($custom->id);
-    assert($default instanceof Form);
-    assert($custom instanceof Form);
-    $default = $default->asArray();
-    $custom = $custom->asArray();
-    expect($default['settings']['success_message'])->equals('You’ve been successfully subscribed to our newsletter!');
-    expect($custom['settings']['success_message'])->equals('Thanks for joining us!');
-  }
-
-  public function testItUpdatesSuccessMessagesWhenConfirmationIsEnabled() {
-    $default = Form::createOrUpdate([
-      'name' => 'with default message',
-      'settings' => ['success_message' => 'Check your inbox or spam folder to confirm your subscription.'],
-    ]);
-    $custom = Form::createOrUpdate([
-      'name' => 'with custom message',
-      'settings' => ['success_message' => 'Thanks for joining us!'],
-    ]);
-    $this->settings->set('signup_confirmation.enabled', '1');
-    $this->messageController->updateSuccessMessages();
-    $default = Form::findOne($default->id);
-    $custom = Form::findOne($custom->id);
-    assert($default instanceof Form);
-    assert($custom instanceof Form);
-    $default = $default->asArray();
-    $custom = $custom->asArray();
-    expect($default['settings']['success_message'])->equals('Check your inbox or spam folder to confirm your subscription.');
-    expect($custom['settings']['success_message'])->equals('Thanks for joining us!');
-  }
-
-  public function _after() {
-    Form::deleteMany();
-  }
-}