> For the complete documentation index, see [llms.txt](https://support.mailagent.email/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.mailagent.email/widget/advanced-usage.md).

# Advanced Usage

## Multiple Widget Instances

You can open multiple widget instances simultaneously, each with different configurations:

```javascript
const supportWidget = await MailAgent.open({
  bottom: "20px",
  right: "20px",
  width: "350px",
  height: "500px"
});

const feedbackWidget = await MailAgent.open({
  path: "/feedback",
  bottom: "20px",
  left: "20px",
  width: "350px",
  height: "400px"
});
```

## Dynamic User Switching

If your application supports multiple users or accounts, load the script once and pass different user IDs when opening:

```javascript
// The data-user-id on the script tag is the default.
// You can override it in the init flow via postMessage if needed.
```

## Analytics Integration

Pass a `distinctId` to associate widget analytics with your own user tracking:

```javascript
const widget = await MailAgent.open({
  bottom: "20px",
  right: "20px",
  width: "400px",
  height: "600px",
  distinctId: currentUser.analyticsId
});
```

This ID is forwarded to the analytics system (PostHog) so you can correlate widget usage with your own user metrics.

## Programmatic Messaging

Use `widget.send()` to trigger contextual conversations based on user actions in your app:

```javascript
// User clicks a "Help" button next to an order
widget.send({
  text: `Help me write a follow-up email about order #${orderId}`
});

// User selects a template
widget.send({
  text: "Draft an email using the 'Meeting Request' template"
});
```

## Lifecycle Management

The widget handle gives you control over the widget lifecycle:

```javascript
const widget = await MailAgent.open({ /* ... */ });

// Check if still in DOM
console.log(widget.mounted); // true

// Close the widget
widget.unmount();

// After unmount completes
console.log(widget.mounted); // false
```

The `unmount()` method plays a fade-out animation before removing the iframe. The widget handle becomes invalid after unmounting.

## Chat Persistence

The widget automatically persists chat history in the browser using `localForage`. Messages are stored for **24 hours** and will be restored if the user reopens the widget within that window.

This means:

* Users can close and reopen the widget without losing context.
* Refreshing the page preserves the conversation.
* After 24 hours, the chat history is automatically cleared.

## Feedback Page

The widget includes a built-in feedback page at the `/feedback` route:

```javascript
const feedbackWidget = await MailAgent.open({
  path: "/feedback",
  bottom: "20px",
  right: "20px",
  width: "400px",
  height: "500px"
});
```

## Language Detection

The widget automatically detects the user's browser language (`navigator.language`) and sends it with each message. The AI assistant will respond in the same language when possible. 22+ languages are supported, including:

English, Spanish, French, German, Arabic, Chinese, Japanese, Korean, Portuguese, Russian, Italian, Dutch, Polish, Turkish, Vietnamese, Thai, Indonesian, Hindi, Bengali, Swedish, Danish, and Norwegian.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://support.mailagent.email/widget/advanced-usage.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.