# Using unsubscribe links

All campaigns sent through Mailblast require an unsubscribe link that allows your recipients to unsubscribe from your list. This is done by adding a {{unsubscribe\_url}} tag, which is automatically replaced with a generated unsubscribe link for the subscriber.

To add an unsubscribe URL click the "Add Tag" button in your editor.

![](/files/EOnGMvMMjeoMkqHMnKCH)

This will add a link called "Unsubscribe". If you need to edit the name of the link. Simple click on the and select the edit button.

![](/files/1LivBp9Z3oRMicCLwToT)

You can then change the text of the unsubscribe link from here:

![](/files/tOfnl1Pc4EuJA6Atj65G)

Alternatively if you want to directly enter in the HTML, use the following:

```
<a href="{{unsubscribe_url}}">Unsubscribe Here</a<br>
```


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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://docs.mailblast.io/using-mailblast/using-unsubscribe-links.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.