There are various levels of notification in PhotoPost. Admin notifications of new photos comments etc would be emailed if you have setup that in your admin settings. Now users have various levels of notifications in Photopost. They can be elected to be notified of new comments on there photo or they can subsribe to be notified about any photo they mark to be notified about or even category subscriptions. All user notifications can be administered on the gallery profile page or if your using the new beta with vb4 through the forum profile under the gallery tab.
No gallery notifications would be shown on the notifications in vb