> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dodopayments.com/llms.txt
> Use this file to discover all available pages before exploring further.

# v1.78.0 (February 2, 2026)

> Communication preferences with push notifications, custom fields for checkout sessions, and expanded checkout language support

## New Features

### 1. **Communication Preferences**

Take control of how you receive notifications with our revamped Communication Preferences. Configure email, push, and in-app notifications to match your workflow.

<Frame>
  <img src="https://mintcdn.com/dodopayments/YvuokxDCslyAwOyr/images/communication-preferences/overview.png?fit=max&auto=format&n=YvuokxDCslyAwOyr&q=85&s=f600972c9d588b5427d250073bf15aac" alt="Communication Preferences overview showing notification settings" style={{ maxHeight: '500px', width: 'auto' }} width="2848" height="1548" data-path="images/communication-preferences/overview.png" />
</Frame>

**Key Features**

* **Revamped email designs**: Fresh, modern email templates with clear calls-to-action and improved readability
* **Push notifications**: Get instant alerts on your mobile device for critical events like new sales, disputes, and payouts
* **Granular controls**: Choose exactly which events trigger notifications and through which channels
* **Multi-email support**: Add multiple email addresses to receive notifications
* **Customer email preferences**: Configure which emails your customers receive

**Notification Categories**

| Category              | Description                                              |
| --------------------- | -------------------------------------------------------- |
| **Sales & Payments**  | New sales, successful payments, failed payments          |
| **Payouts & Refunds** | Payout completions, refund requests, refund completions  |
| **Subscriptions**     | New subscriptions, renewals, cancellations, plan changes |
| **Disputes**          | Dispute opened, evidence required, dispute resolved      |

<Check>
  Result: Stay informed about your business with notifications delivered exactly how and when you want them.
</Check>

Learn more: [Communication Preferences Guide](/features/communication-preferences)

### 2. **Custom Fields in Checkout Sessions**

Collect additional information from customers during checkout with custom fields. Add text inputs, dropdowns, dates, and more to gather the data you need.

**Supported Field Types**

| Type       | Description                       | Use Case                            |
| ---------- | --------------------------------- | ----------------------------------- |
| `text`     | Single-line text input            | Company name, order notes           |
| `number`   | Numeric input                     | Quantity, age                       |
| `email`    | Email input with validation       | Billing contact email               |
| `url`      | URL input with validation         | Website, social profile             |
| `date`     | Date picker                       | Delivery date, event date           |
| `dropdown` | Selection from predefined options | Size, color, plan type              |
| `boolean`  | Checkbox for yes/no values        | Terms acceptance, newsletter opt-in |

**How It Works**

```typescript theme={null}
const session = await client.checkoutSessions.create({
  product_cart: [{ product_id: 'prod_123', quantity: 1 }],
  custom_fields: [
    {
      name: 'company_name',
      label: 'Company Name',
      type: 'text',
      required: true
    },
    {
      name: 'team_size',
      label: 'Team Size',
      type: 'dropdown',
      options: ['1-10', '11-50', '51-200', '200+'],
      required: true
    },
    {
      name: 'newsletter',
      label: 'Subscribe to our newsletter',
      type: 'boolean',
      required: false
    }
  ],
  return_url: 'https://yoursite.com/success'
});
```

**Benefits**

* **Flexible data collection**: Gather any information needed for fulfillment or personalization
* **Validation built-in**: Email and URL fields automatically validate input format
* **Required/optional control**: Mark fields as required or optional based on your needs
* **Webhook delivery**: Custom field values are included in payment webhook events

<Info>
  Custom field values are returned in the `custom_fields` object within payment and checkout session responses.
</Info>

Learn more: [Checkout Session Custom Fields](/developer-resources/checkout-session#custom-fields)

### 3. **Expanded Checkout Language Support**

The checkout page now supports **21 languages**, up from 16. Reach more customers in their native language for a better checkout experience.

**New Languages Added**

| Language | Code |
| -------- | ---- |
| Korean   | `ko` |
| Malay    | `ms` |
| Romanian | `ro` |
| Russian  | `ru` |
| Thai     | `th` |

**All Supported Languages**

Arabic, Chinese, Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Portuguese, Romanian, Russian, Spanish, Swedish, Thai, Turkish, Ukrainian, Vietnamese.

**Force a Specific Language**

Use the `force_language` parameter to override automatic language detection:

```typescript theme={null}
const session = await client.checkoutSessions.create({
  product_cart: [{ product_id: 'prod_123', quantity: 1 }],
  force_language: 'ko', // Force Korean language
  return_url: 'https://yoursite.com/success'
});
```

<Tip>
  By default, the checkout page automatically detects the customer's preferred language from their browser settings. Use `force_language` when you want to ensure consistency with your website's language.
</Tip>

Learn more: [Checkout Language Support](/features/checkout#supported-languages)

### 4. **General Bug Fixes and Enhancements**

This release includes performance improvements, UI polish, and resolves minor bugs for a more reliable, streamlined experience.