diff --git a/mailpoet/tests/integration/Mailer/MailerTest.php b/mailpoet/tests/integration/Mailer/MailerTest.php
index 2f865a9fa5..6da8204ba0 100644
--- a/mailpoet/tests/integration/Mailer/MailerTest.php
+++ b/mailpoet/tests/integration/Mailer/MailerTest.php
@@ -3,8 +3,6 @@
 namespace MailPoet\Test\Mailer;
 
 use MailPoet\Mailer\Mailer;
-use MailPoet\Settings\SettingsController;
-use MailPoet\Settings\SettingsRepository;
 use MailPoet\Test\DataFactories\Subscriber as SubscriberFactory;
 
 class MailerTest extends \MailPoetTest {
@@ -16,39 +14,8 @@ class MailerTest extends \MailPoetTest {
   public $sender;
   public $availableMailerMethods;
 
-  /** @var SettingsController */
-  private $settings;
-
   public function _before() {
     parent::_before();
-    $this->availableMailerMethods = [
-      [
-        'method' => 'AmazonSES',
-        'region' => 'us-west-2',
-        'access_key' => '1234567890',
-        'secret_key' => 'abcdefghijk',
-      ],
-      [
-        'method' => 'MailPoet',
-        'mailpoet_api_key' => 'abcdefghijk',
-      ],
-      [
-        'method' => 'SendGrid',
-        'api_key' => 'abcdefghijk',
-      ],
-      [
-        'method' => 'PHPMail',
-      ],
-      [
-        'method' => 'SMTP',
-        'host' => 'example.com',
-        'port' => 25,
-        'authentication' => true,
-        'login' => 'username',
-        'password' => 'password',
-        'encryption' => 'tls',
-      ],
-    ];
     $this->sender = [
       'name' => 'Sender',
       'address' => 'staff@mailinator.com',
@@ -72,67 +39,6 @@ class MailerTest extends \MailPoetTest {
         'text' => 'TEXT body',
       ],
     ];
-    $this->settings = SettingsController::getInstance();
-  }
-
-  public function testItRequiresMailerMethod() {
-    // reset mta settings so that we have no default mailer
-    $this->settings->set('mta', null);
-    try {
-      $mailer = new Mailer();
-      $mailer->init();
-      $this->fail('Mailer did not throw an exception');
-    } catch (\Exception $e) {
-      expect($e->getMessage())->equals('Mailer is not configured.');
-    }
-  }
-
-  public function testItRequiresSender() {
-    try {
-      $mailer = new Mailer();
-      $mailer->init($mailer = $this->mailer);
-      $this->fail('Mailer did not throw an exception');
-    } catch (\Exception $e) {
-      expect($e->getMessage())->equals('Sender name and email are not configured.');
-    }
-  }
-
-  public function testItCanConstruct() {
-    $mailer = new Mailer();
-    $mailer->init($this->mailer, $this->sender, $this->replyTo, $this->returnPath);
-    expect($mailer->sender['from_name'])->equals($this->sender['name']);
-    expect($mailer->sender['from_email'])->equals($this->sender['address']);
-    expect($mailer->replyTo['reply_to_name'])->equals($this->replyTo['name']);
-    expect($mailer->replyTo['reply_to_email'])->equals($this->replyTo['address']);
-    expect($mailer->returnPath)->equals($this->returnPath);
-  }
-
-  public function testItThrowsUnknownMailerException() {
-    try {
-      $mailer = new Mailer();
-      $mailer->init(['method' => 'Unknown'], $this->sender);
-      $this->fail('Mailer did not throw an exception');
-    } catch (\Exception $e) {
-      expect($e->getMessage())->equals('Mailing method does not exist.');
-    }
-  }
-
-  public function testItSetsReplyToAddressWhenOnlyNameIsAvailable() {
-    $replyTo = ['name' => 'test'];
-    $mailer = new Mailer();
-    $mailer->init($this->mailer, $this->sender, $replyTo);
-    $replyTo = $mailer->getReplyToNameAndAddress();
-    expect($replyTo['reply_to_email'])->equals($this->sender['address']);
-  }
-
-  public function testItGetsReturnPathAddress() {
-    $mailer = new Mailer();
-    $mailer->init($this->mailer, $this->sender, $this->replyTo);
-    $returnPath = $mailer->getReturnPathAddress('bounce@test.com');
-    expect($returnPath)->equals('bounce@test.com');
-    $this->settings->set('bounce', ['address' => 'settngs_bounce@test.com']);
-    $returnPath = $mailer->getReturnPathAddress($returnPath = false);
-    expect($returnPath)->equals('settngs_bounce@test.com');
   }
 
   public function testItCanTransformSubscriber() {
@@ -172,27 +78,6 @@ class MailerTest extends \MailPoetTest {
     )->equals('First Last <test@email.com>');
   }
 
-  public function testItCanConvertNonASCIIEmailAddressString() {
-    $mailer = new Mailer();
-    $mailer->init($this->mailer, $this->sender, $this->replyTo);
-    expect($mailer->sender['from_name'])->equals($this->sender['name']);
-    expect($mailer->replyTo['reply_to_name'])->equals($this->replyTo['name']);
-    $sender = [
-      'name' => 'Sender Außergewöhnlichen тест системы',
-      'address' => 'staff@mailinator.com',
-    ];
-    $replyTo = [
-      'name' => 'Reply-To Außergewöhnlichen тест системы',
-      'address' => 'staff@mailinator.com',
-    ];
-    $mailer = new Mailer();
-    $mailer->init($this->mailer, $sender, $replyTo);
-    expect($mailer->sender['from_name'])
-      ->equals(sprintf('=?utf-8?B?%s?=', base64_encode($sender['name'])));
-    expect($mailer->replyTo['reply_to_name'])
-      ->equals(sprintf('=?utf-8?B?%s?=', base64_encode($replyTo['name'])));
-  }
-
   public function testItCanSend() {
     if (getenv('WP_TEST_MAILER_ENABLE_SENDING') !== 'true') $this->markTestSkipped();
     $this->sender['address'] = 'staff@mailpoet.com';
@@ -218,18 +103,4 @@ class MailerTest extends \MailPoetTest {
     $result = $mailer->send($this->newsletter, $subscriber);
     expect($result['response'])->true();
   }
-
-  public function testItIgnoresInvalidBounceAddress() {
-    $this->settings->set('bounce.address', 'ok@address.com');
-    $mailer = new Mailer();
-    $mailer->init($this->mailer, $this->sender, $this->replyTo);
-    expect($mailer->returnPath)->equals('ok@address.com');
-    $this->settings->set('bounce.address', 'invalid');
-    $mailer->init($this->mailer, $this->sender, $this->replyTo);
-    expect($mailer->returnPath)->null();
-  }
-
-  public function _after() {
-    $this->diContainer->get(SettingsRepository::class)->truncate();
-  }
 }