# Contact triggers

Contact triggers allow you to run a flow on events that happen to contacts.

## Contact trigger events

There are five types of contact trigger event:

* [Contact created](#contact-created)
* [Contact updated](#contact-updated)
* [Contact deleted](#contact-deleted)
* [Contact added to group](#contact-added-to-group)
* [Contact removed from group](#contact-removed-from-group)

### Contact created

Run a flow when a new [contact profile](broken://pages/ILty7HQuUadhEmiVkLh5) is created. 

You might use this trigger to send a welcome message to new contacts or add them to a [group](broken://pages/VKxhIJwTtUT6KN1QKTLs).

### Contact updated

Run a flow when an existing contact profile is updated. 

You can use this trigger to update a contact's information in another system or to send a follow-up message after a contact has updated their preferences.

### Contact deleted

Run a flow when a contact is deleted. 

You can use this trigger to remove the contact from any groups or workflows they were part of, or to send a confirmation message to the contact that their information has been removed.

### Contact added to group

Run a flow when a contact is added to a group. 

You can use this trigger to send a message related to the topic of that group.

When setting up this trigger, you'll need to select an existing [contact group](broken://pages/VKxhIJwTtUT6KN1QKTLs).

### Contact removed from group

Run a flow when a contact is removed from a group.

When setting up this trigger, you'll need to select an existing [contact group](#contact-added-to-group).


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.bird.com/applications/automation/flows/concepts/triggers/contact-triggers.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.