--- mailsave.module.ORIG        2007-08-29 23:22:49.000000000 +0200
+++ mailsave.module     2007-08-30 00:10:05.000000000 +0200
@@ -217,6 +217,10 @@
       }
     }
 
+    if ($filename=='') {
+      $filename = 'TEMP';
+    }
+
     // if a filename was obtained
     if ($filename!='') {