add settings not to send a confirmation email

newsletter/views.py

@@ -43,7 +43,7 @@ class SubscribeView(CreateView):
         )
         self.object.user_agent = self.request.META.get('HTTP_USER_AGENT')
         self.object.save()
-        if not self.object.is_from_bot():
+        if not self.object.is_from_bot() and getattr(settings, 'NEWSLETTER_SEND_CONFIRMATION', True):
             self.object.send_confirmation_email()
         return resp