Internal users, that is, users in your own company that have access to your Intranet, are not sent notification e-mail messages automatically. The have to actively subscribe to a notification in order to receive notifications. It is very important to note that:
When designing a notification in the Notification Designer, you give users or groups of users permission to subscribe to ( or sign up for) notifications.
The users themselves will have to use the browser-based subscription management application to subscribe to notifications (and also to delete subscriptions).
Users are not automatically informed of new notifications they have permission to subscribe to. If you need to distribute such information, you must do it yourself.
Notifications can also be sent to external recipients, such as business partners. These recipients are, contrary to the internal ones, set up explicitly.
The topic How to Subscribe describes the subscription interface and what end-users need to know about it.