The eZMail libraries coming with eZ Publish do not support attachments. If you're on PHP 4 / eZ Publish 3 you might have to use a third party mail library to send out e-mails with attachments in PHP, take a look at this extension: http://projects.ez.no/ezswift. If you're on PHP 5 / eZ Publish 4, you can use the eZ Mail Component: http://ezcomponents.org/docs/tutorials/Mail. Good luck!