---
title: Events
description: Track actions and trigger workflows
icon: Activity
---

## Overview

Events track user actions. Use them to trigger workflows and update contact data.

## Tracking

```javascript
await fetch('/v1/track', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer pk_your_public_key'
  },
  body: JSON.stringify({
    event: 'signed_up',
    email: user.email,
    data: { plan: 'pro' }
  })
});
```

Creates/updates contact and records the event.

## Keys

- **Public key (pk_*):** Safe for client-side, only works with `/v1/track`
- **Secret key (sk_*):** Server-side only, full API access

## Event data

**Persistent (default):** Saved to contact
```javascript
data: { plan: 'premium' }
```

**Non-persistent:** Available only to workflow
```javascript
data: {
  orderId: { value: 'order-123', persistent: false }
}
```

## Automatic events

Plunk tracks these automatically:
- `email.sent`, `email.opened`, `email.clicked`
- `email.bounced`, `email.complained`
- `segment.entered`, `segment.exited`