# Subscribe and unsubscribe

If you are not logged in or your user account is not linked to a subscriber, you get first a form to enter your email address ![](/files/-MEJRIBhW53hDJdkkuMO)

if you enter your email and click on submit, then you get and overview about the existing subscriptions of this email. ![](/files/-MEJRIBi-2mQ_03LrBsb)

If this email address isn't stored in the newsletter system, you get direclty to the form for subscription. ![](/files/-MEJRIBjJtETk_nIu9Vc) Under "Available newsletters" the user can see all newsletter cats, where his groups has the right to read.


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# 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://xoops.gitbook.io/xnewsletter-tutorial/en/5userside/subscribe_and_unsubscribe.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.