diff --git a/src/Entity/Subscriber.php b/src/Entity/Subscriber.php
index 039a5f2..eccc0d7 100644
--- a/src/Entity/Subscriber.php
+++ b/src/Entity/Subscriber.php
@@ -289,7 +289,6 @@ class Subscriber extends ContentEntityBase implements SubscriberInterface {
       $this->subscriptions->appendItem($data);
     }
 
-    \Drupal::moduleHandler()->invokeAll('simplenews_subscribe', [$this, $newsletter_id]);
     return $this;
   }
 
@@ -312,7 +311,6 @@ class Subscriber extends ContentEntityBase implements SubscriberInterface {
     // Clear any existing mail spool rows for this subscriber.
     \Drupal::service('simplenews.spool_storage')->deleteMails(['snid' => $this->id(), 'newsletter_id' => $newsletter_id]);
 
-    \Drupal::moduleHandler()->invokeAll('simplenews_unsubscribe', [$this, $newsletter_id]);
     return $this;
   }
 
@@ -326,6 +324,19 @@ class Subscriber extends ContentEntityBase implements SubscriberInterface {
     if ($this->isConfirmed() && $user = $this->getUser()) {
       $this->copyToAccount($user);
     }
+
+    if ($this->isConfirmed() && isset($this->original)) {
+      $added = array_diff($this->getSubscribedNewsletterIds(), $this->original->getSubscribedNewsletterIds());
+      $removed = array_diff($this->original->getSubscribedNewsletterIds(), $this->getSubscribedNewsletterIds());
+
+      foreach ($added as $newsletter_id) {
+        \Drupal::moduleHandler()->invokeAll('simplenews_subscribe', [$this, $newsletter_id]);
+      }
+
+      foreach ($removed as $newsletter_id) {
+        \Drupal::moduleHandler()->invokeAll('simplenews_unsubscribe', [$this, $newsletter_id]);
+      }
+    }
   }
 
   /**