diff --git a/app/models/dossier.rb b/app/models/dossier.rb
index 32541d571..ecfa5ccc2 100644
--- a/app/models/dossier.rb
+++ b/app/models/dossier.rb
@@ -377,7 +377,7 @@ class Dossier < ActiveRecord::Base
 
   def send_notification_email
     if state_changed? && EN_INSTRUCTION.include?(state)
-      NotificationMailer.send_notification(self, procedure.received_mail_template).deliver_now!
+      NotificationMailer.send_notification(self, procedure.received_mail_template).deliver_later
     end
   end
 end