diff --git a/tests/integration/API/JSON/v1/SettingsTest.php b/tests/integration/API/JSON/v1/SettingsTest.php
index b9cd65b2b6..3d4f63923e 100644
--- a/tests/integration/API/JSON/v1/SettingsTest.php
+++ b/tests/integration/API/JSON/v1/SettingsTest.php
@@ -6,8 +6,11 @@ use Codeception\Stub\Expected;
 use MailPoet\API\JSON\Error as APIError;
 use MailPoet\API\JSON\Response as APIResponse;
 use MailPoet\API\JSON\v1\Settings;
+use MailPoet\Config\ServicesChecker;
 use MailPoet\Cron\Workers\InactiveSubscribers;
+use MailPoet\Mailer\MailerLog;
 use MailPoet\Models\ScheduledTask;
+use MailPoet\Newsletter\NewslettersRepository;
 use MailPoet\Services\AuthorizedEmailsController;
 use MailPoet\Services\Bridge;
 use MailPoet\Settings\SettingsController;
@@ -33,7 +36,8 @@ class SettingsTest extends \MailPoetTest {
       $this->settings,
       new Bridge,
       $this->make(AuthorizedEmailsController::class, ['onSettingsSave' => true ]),
-      $this->make(TransactionalEmails::class)
+      $this->make(TransactionalEmails::class),
+      $this->make(ServicesChecker::class)
     );
   }
 
@@ -65,7 +69,8 @@ class SettingsTest extends \MailPoetTest {
       $this->settings,
       $this->make(Bridge::class, ['onSettingsSave' => Expected::once()]),
       $this->make(AuthorizedEmailsController::class, ['onSettingsSave' => Expected::once()]),
-      $this->make(TransactionalEmails::class)
+      $this->make(TransactionalEmails::class),
+      $this->make(ServicesChecker::class)
     );
 
     $response = $this->endpoint->set(/* missing data */);
@@ -82,6 +87,44 @@ class SettingsTest extends \MailPoetTest {
     expect($response->data['some']['new_setting'])->true();
   }
 
+  public function testItSetsAuthorizedFromAddressAndResumesSending() {
+    $bridgeMock = $this->make(Bridge::class, ['getAuthorizedEmailAddresses' => Expected::once(['authorized@email.com'])]);
+    $this->endpoint = new Settings(
+      $this->settings,
+      $bridgeMock,
+      new AuthorizedEmailsController($this->settings, $bridgeMock, $this->diContainer->get(NewslettersRepository::class)),
+      $this->make(TransactionalEmails::class),
+      $this->make(ServicesChecker::class, ['isMailPoetAPIKeyPendingApproval' => false])
+    );
+
+    MailerLog::pauseSending(MailerLog::getMailerLog());
+    $this->settings->set('sender.address', '');
+    $response = $this->endpoint->setAuthorizedFromAddress(['address' => 'authorized@email.com']);
+    expect($response->status)->same(200);
+    expect($this->settings->get('sender.address'))->same('authorized@email.com');
+    expect(MailerLog::isSendingPaused())->false();
+  }
+
+  public function testItRejectsUnauthorizedFromAddress() {
+    $bridgeMock = $this->make(Bridge::class, ['getAuthorizedEmailAddresses' => Expected::once(['authorized@email.com'])]);
+    $this->endpoint = new Settings(
+      $this->settings,
+      $bridgeMock,
+      new AuthorizedEmailsController($this->settings, $bridgeMock, $this->diContainer->get(NewslettersRepository::class)),
+      $this->make(TransactionalEmails::class),
+      $this->make(ServicesChecker::class)
+    );
+
+    $this->settings->set('sender.address', '');
+    $response = $this->endpoint->setAuthorizedFromAddress(['address' => 'invalid@email.com']);
+    expect($response->status)->same(400);
+    expect($response->getData()['errors'][0])->same([
+      'error' => 'unauthorized',
+      'message' => 'Can’t use this email yet! Please authorize it first.',
+    ]);
+    expect($this->settings->get('sender.address'))->same('');
+  }
+
   public function testItSchedulesInactiveSubscribersCheckIfIntervalSettingChanges() {
     $this->settings->set('deactivate_subscriber_after_inactive_days', 30);
     $settings = ['deactivate_subscriber_after_inactive_days' => 30];