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

# Communication

> SMS, email, and push notification connectors

# Communication Connectors

Connect to messaging and notification services.

## Available Channels

| Channel   | Use Cases                  |
| --------- | -------------------------- |
| **SMS**   | OTP, alerts, notifications |
| **Email** | Transactional, statements  |
| **Push**  | Mobile app notifications   |

## SMS Connector

* OTP delivery
* Transaction alerts
* Marketing (opt-in)
* Multi-provider support

## Email Connector

* Transactional emails
* Account statements
* Marketing campaigns
* Template management

## Push Notifications

* iOS APNs
* Android FCM
* Web push

## Integration

```json theme={null}
{
  "connector": "communication",
  "channel": "sms",
  "to": "+1234567890",
  "template": "otp_verification",
  "data": { "code": "123456" }
}
```

## Delivery Tracking

* Delivery status webhooks
* Read receipts (email)
* Failure handling