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---
title: Notifications
---
## Filtering Events
Starting with authentik 0.15, you can create notification triggers, which can alert you based on the creation of certain events.
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Filtering is done by using the Policy Engine. You can do simple filtering using the "Event Matcher Policy" type.
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![](./event_matcher.png)
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An event has to match all configured fields, otherwise the trigger will not activate.
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To match events with an "Expression Policy", you can write code like so:
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```python
if "event" not in request.context:
return False
return ip_address(request.context["evnet"].client_ip) in ip_network('192.0.2.0/24')
```
## Selecting who gets notified
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After you've created the policies to match the events you want, create a "Notification Trigger".
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You have to select which group the generated notification should be sent to. If left empty, the trigger will be disabled.
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You also have to select which transports should be used to send the notification.
A transport with the name "default-email-transport" is created by default. This transport will use the [global email configuration ](../installation/docker-compose#email-configuration-optional-but-recommended ).