diff --git a/lib/API/JSON/v1/Subscribers.php b/lib/API/JSON/v1/Subscribers.php
index ce140b70d5..29ab881b7e 100644
--- a/lib/API/JSON/v1/Subscribers.php
+++ b/lib/API/JSON/v1/Subscribers.php
@@ -10,6 +10,7 @@ use MailPoet\Listing;
 use MailPoet\Models\Form;
 use MailPoet\Models\StatisticsForms;
 use MailPoet\Models\Subscriber;
+use MailPoet\Models\SubscriberSegment;
 use MailPoet\Newsletter\Scheduler\Scheduler;
 use MailPoet\Segments\BulkAction;
 use MailPoet\Segments\SubscribersListings;
@@ -229,6 +230,7 @@ class Subscribers extends APIEndpoint {
     if (empty($data['segments'])) {
       $data['segments'] = array();
     }
+    $new_segments = $this->findNewSegments($data);
     $subscriber = Subscriber::createOrUpdate($data);
     $errors = $subscriber->getErrors();
 
@@ -241,8 +243,8 @@ class Subscribers extends APIEndpoint {
       $subscriber->save();
     }
 
-    if (!empty($data['segments'])) {
-      Scheduler::scheduleSubscriberWelcomeNotification($subscriber->id, $data['segments']);
+    if (!empty($new_segments)) {
+      Scheduler::scheduleSubscriberWelcomeNotification($subscriber->id, $new_segments);
     }
 
     return $this->successResponse(
@@ -250,6 +252,17 @@ class Subscribers extends APIEndpoint {
     );
   }
 
+  private function findNewSegments(array $data) {
+    $old_segment_ids = [];
+    if (isset($data['id']) && (int)$data['id'] > 0) {
+      $old_segments = SubscriberSegment::where('subscriber_id', $data['id'])->findMany();
+      foreach ($old_segments as $old_segment) {
+        $old_segment_ids[] = $old_segment->segment_id;
+      }
+    }
+    return array_diff($data['segments'], $old_segment_ids);
+  }
+
   function restore($data = array()) {
     $id = (isset($data['id']) ? (int)$data['id'] : false);
     $subscriber = Subscriber::findOne($id);
diff --git a/tests/integration/API/JSON/v1/SubscribersTest.php b/tests/integration/API/JSON/v1/SubscribersTest.php
index 009a726088..cd5a87607c 100644
--- a/tests/integration/API/JSON/v1/SubscribersTest.php
+++ b/tests/integration/API/JSON/v1/SubscribersTest.php
@@ -601,6 +601,32 @@ class SubscribersTest extends \MailPoetTest {
     expect(SendingQueue::findMany())->count(1);
   }
 
+  function testItDoesNotSchedulesWelcomeEmailNotificationWhenNoNewSegmentIsAdded() {
+    $this->_createWelcomeNewsletter();
+    $subscriber = Subscriber::createOrUpdate(array(
+      'email' => 'raul.doe@mailpoet.com',
+      'first_name' => 'Jane',
+      'last_name' => 'Doe',
+      'status' => Subscriber::STATUS_SUBSCRIBED,
+      'segments' => [
+        $this->segment_1->id
+      ],
+      'source' => Source::IMPORTED,
+    ));
+    $subscriber_data = array(
+      'id' => $subscriber->id(),
+      'email' => 'raul.doe@mailpoet.com',
+      'first_name' => 'Raul',
+      'last_name' => 'Doe',
+      'segments' => array(
+        $this->segment_1->id
+      )
+    );
+
+    $this->endpoint->save($subscriber_data);
+    expect(SendingQueue::findMany())->count(0);
+  }
+
   private function _createWelcomeNewsletter() {
     $welcome_newsletter = Newsletter::create();
     $welcome_newsletter->type = Newsletter::TYPE_WELCOME;