Update isActive column in mailchimp upon activation

common/djangoapps/student/models.py

@@ -504,8 +504,29 @@ class Registration(models.Model):
 
     def activate(self):
         self.user.is_active = True
+        self._track_activation()
         self.user.save()
 
+    def _track_activation(self):
+        """ Update the isActive flag in mailchimp for activated users."""
+        has_segment_key = getattr(settings, 'LMS_SEGMENT_KEY', None)
+        has_mailchimp_id = hasattr(settings, 'MAILCHIMP_NEW_USER_LIST_ID')
+        if has_segment_key and has_mailchimp_id:
+            identity_args = [
+                self.user.id,  # pylint: disable=no-member
+                {
+                    'email': self.user.email,
+                    'username': self.user.username,
+                    'activated': 1,
+                },
+                {
+                    "MailChimp": {
+                        "listId": settings.MAILCHIMP_NEW_USER_LIST_ID
+                    }
+                }
+            ]
+            analytics.identify(*identity_args)
+
 
 class PendingNameChange(models.Model):
     user = models.OneToOneField(User, unique=True, db_index=True)