> 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 MailAgent's analytics with each chat message so widget sessions can be correlated with your own user metrics. Values that look like email addresses are redacted before they are stored.

### What the widget collects

The widget records anonymous usage events: loading, opening and closing, messages sent, response times, suggestion and link clicks, email-escalation form use, and errors. It never records message text, file contents or form input, does not use cookies (an anonymous ID is kept in the widget's own `localStorage`), and does not record sessions or capture clicks automatically. Events are attributed to your MailAgent account and to your site's domain.

## 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.