# Notifications
This documentation is based on the *FoodCrunch* use case. Please open the link below alongside this page to understand the examples.
{% content-ref url="../introduction-and-use-case" %}
[introduction-and-use-case](https://docs.squidex.io/id-02-documentation/introduction-and-use-case)
{% endcontent-ref %}
## Introduction
Squidex provides a notification service that is power by *Notifo*. [*Notifo*](https://notifo.io) is an open source general purpose notification framework, initially developed for Squidex to enable users to subscribe to changes and receive notifications.
### Scenarios Where Notifications Can Be Triggered
* When there is a content item change.
* When there are changes made to the schema.
* When there are changes to contributors, such as adding contributors or changing their roles.
* Notifications can also be triggered by rules.
* Notifications are also triggered by mentions and comments, e.g. if you add "*@user*" to a comment
{% hint style="info" %}
This notification service only works in Squidex Cloud (i.e. cloud.squidex.io) by default. To use this service in a self-hosted installation, you must separately install and run the Notifo service. Click here for installation instructions (coming soon).
{% endhint %}
### How Notifications Work
* Notifications can be received through email or (web) push notifications.
{% hint style="info" %}
At the time of writing this article, email notifications are not operational.
{% endhint %}
* Those subscribing to a change won't see any notifications if they initiated the changes themselves. A notification is only created if changes are made by someone else.
The notification icon is situated on the top menu bar, next to the user icon. Clicking on this displays *Notifications*, *Archive* (archived notifications) and the notification *Profile*.
Notification icon
## Subscribing to Changes
Follow the instructions below to subscribe to changes. For this purpose of this example we are subscribing to changes in **Settings** > **Contributors**.
1. Navigate to **Settings** (1) and then **Contributors** (2) for your App.
Contributor settings for the app
2. Next, subscribe to the changes. To do so, click on the **bell icon** (3) and then toggle to the **notification mediums of choice** (4), Notifications can be received by Email and/or Push Notifications. Next, click **Save** (5).
Subscribing to notifications
3. At this point a new contributor can be added or invited. To test notifications, you can add a contributor. \
\
To do so, **enter the name or email** (1) address of the contributor (a drop down menu appears making it easy to select an existing user or enter an email address if you wish to add a new user). Next, select the role for example **Editor** (2) and click **Add Contributor** (3). \
\ NOTE: Subscribers will only receive a notification if the change is actioned by another user.
Adding a contributor
4. Whenever a new contributor is added, the subscribed user will receive a notification through their chosen notification methods (currently, only Web Push Notifications work). An example of a (eWb) Push Notification can be viewed below.
## Setting the Notification Profile
To set the notification profile, click the **Notification icon** (1) on the top bar and then select the **Profile** tab (2). You can set your notification preferences, notification email and preferred time zone amongst other settings.
