Email notification is online atm. But it may stop working again later today due to a policy we are trying to resolve with google and their app engine services… (royal suck atm) In the meantime the workarounds are:
1) app installation
– use iTunes to install ad hoc app
2) published webapp
– in the wizard click through to the Publish page. Manually publish and copy the URL that is presented. Then for on device testing, email the url to your device.