Email attachment directory

The email attachment directory is hard-coded to place files under the web root.

From Cron.php line 529
$emailAttachmentsDir=dirname(__FILE__) . '/../files/attach';

This resolves to '<webroot>/model/../files/attach' -> '<webroot>/files/attach'

My files directory is outside of the webroot and this line breaks the Cron mail check feature since '<webroot>/files' does not exist.

Can you add a configuration parameter for setting the attach directory for emails? Or use the same config setting as for attachments directory under Global Parameters->Files and directories->attachments directory.