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

# Introduction

> Welcome to Transmit API documentation. Send emails, SMS, and more with a simple, powerful API.

## What is Transmit?

Transmit is a universal data transmission platform that provides APIs for emails, SMS, voice calls, logs, and analytics. We're built to be **Resend and SendGrid API-compatible**, making migration seamless.

## Key Features

<CardGroup cols={2}>
  <Card title="Multi-Channel Communication" icon="messages" href="/docs/guides/multi-channel">
    Send emails, SMS, and voice messages through one unified API
  </Card>

  <Card title="Developer-Friendly SDKs" icon="code" href="/docs/sdks/typescript">
    TypeScript with full type safety and IntelliSense
  </Card>

  <Card title="Real-Time Analytics" icon="chart-line" href="/docs/guides/analytics">
    Track deliverability, opens, clicks, and engagement metrics
  </Card>

  <Card title="Enterprise Security" icon="shield" href="/docs/guides/security">
    SOC 2 Type II certification in progress with enterprise-grade encryption
  </Card>
</CardGroup>

## Quick Example

Here's how easy it is to send your first email with Transmit:

<CodeGroup>
  ```typescript TypeScript theme={null}
  import { Transmit } from 'transmitdev';

  const client = new Transmit({
    apiKey: 'tx_your_api_key_here'
  });

  const response = await client.emails.send({
    from: 'hello@yourdomain.com',
    to: 'user@example.com',
    subject: 'Welcome to Transmit!',
    html: '<h1>Hello World</h1><p>Your first email via Transmit.</p>'
  });

  console.log(response.id); // Email sent successfully
  ```

  ```bash cURL theme={null}
  curl -X POST https://api.transmit.dev/v1/emails \
    -H "Authorization: Bearer tx_your_api_key_here" \
    -H "Content-Type: application/json" \
    -d '{
      "from": "hello@yourdomain.com",
      "to": "user@example.com",
      "subject": "Welcome to Transmit!",
      "html": "<h1>Hello World</h1><p>Your first email via Transmit.</p>"
    }'
  ```
</CodeGroup>

## Next Steps

<CardGroup cols={2}>
  <Card title="Quickstart" icon="bolt" href="/quickstart">
    Send your first email in under 5 minutes
  </Card>

  <Card title="API Reference" icon="book" href="/api-reference/introduction">
    Explore the complete API documentation
  </Card>

  <Card title="SDKs" icon="package" href="/sdks/typescript">
    Install our official TypeScript SDK
  </Card>

  <Card title="Domain Verification" icon="check-circle" href="/guides/domain-verification">
    Verify your domain to start sending emails
  </Card>
</CardGroup>