diff --git a/public.js b/public.js
new file mode 100644
index 0000000..c809ff7
--- /dev/null
+++ b/public.js
@@ -0,0 +1,16 @@
+// -- BEGIN LICENSE BLOCK ----------------------------------
+// This file is part of Email Optionnel, a plugin for Dotclear.
+//
+// Copyright (c) 2007-2020 Oleksandr Syenchuk, Pierre Van Glabeke, Gvx
+//
+// Licensed under the GPL version 2.0 license.
+// A copy is available in LICENSE file or at
+// http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+// -- END LICENSE BLOCK ------------------------------------
+
+'use strict'
+
+document.addEventListener("DOMContentLoaded", function() {
+	var id_mail = 'c_mail', el = document.getElementById(id_mail);
+	if(el) { el.removeAttribute('required'); }
+});