diff --git a/mail/js/app.js b/mail/js/app.js
index f56d4350be..f35ff4ef98 100644
--- a/mail/js/app.js
+++ b/mail/js/app.js
@@ -5609,10 +5609,15 @@ app.classes.mail = AppJS.extend(
 	spamTitan_setActionTitle: function (_action, _sender)
 	{
 		var id = _sender[0].id != 'nm'? _sender[0].id:_sender[1].id;
+		var email = this.egw.lang('emails');
+		var domain = this.egw.lang('domains');
 		var data = egw.dataGetUIDdata(id);
-		var fromaddress = data.data.fromaddress.match(/<([^\'\" <>]+)>$/);
-		var email = _sender.length>1? this.egw.lang('emails'):(fromaddress && fromaddress[1]) ?fromaddress[1]:data.data.fromaddress;
-		var domain = _sender.length>1? this.egw.lang('domains'):email.split('@')[1];
+		if(_sender.length === 1 && data && data.data && data.data.fromaddress)
+		{
+			var fromaddress = data.data.fromaddress.match(/<([^\'\" <>]+)>$/);
+			email = (fromaddress && fromaddress[1]) ?fromaddress[1]:data.data.fromaddress;
+			domain = email.split('@')[1];
+		}
 		switch (_action.id)
 		{
 			case 'whitelist_email_add':