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

# Welcome to Vouch

> Tool to validate emails, fingerprint devices, and block bad actors.

## What is Vouch?

Vouch is a comprehensive tool for email validation and fraud detection that helps you protect your application from fake accounts, disposable emails, and fraudulent signups. With sophisticated validation checks and device fingerprinting technology, Vouch ensures only legitimate users access your platform.

We perform different validation checks including:

* **Syntax validation** - Ensure proper email format
* **Disposable email detection** - Block temporary email services
* **MX record verification** - Confirm domain has mail servers
* **Role email detection** - Flag admin@, test@, etc.
* **Alias detection** - Detect plus-addressing ([user+123456@domain.com](mailto:user+123456@domain.com))
* **Device fingerprinting** - Track device reuse across emails
* **IP reputation** - Detect VPNs, proxies, and fraud

## How It Works

<Steps>
  <Step title="Capture email">
    Collect the user's email address
  </Step>

  <Step title="Validate">
    Runs comprehensive validation checks in parallel with intelligent early-exit logic for optimal performance
  </Step>

  <Step title="Get results">
    Receive detailed validation results with a recommendation: allow, flag, or block
  </Step>
</Steps>

### Edge-Powered Performance

Built on Cloudflare Workers, Vouch delivers validation results in milliseconds from data centers worldwide. Our smart parallel validation architecture exits early on blocking checks while gathering comprehensive signals.

### Developer-Friendly

Get started in minutes with our SDKs for every platform:

<CardGroup cols={3}>
  <Card title="JavaScript" icon="js" href="/sdks/javascript">
    Browser applications
  </Card>

  <Card title="React" icon="react" href="/sdks/react">
    React with hooks
  </Card>

  <Card title="Node.js" icon="node" href="/sdks/node">
    Server-side validation
  </Card>

  <Card title="Next.js" icon="N" href="/sdks/nextjs">
    Next.js integration
  </Card>

  <Card title="iOS" icon="apple" href="/sdks/ios">
    Swift SDK
  </Card>

  <Card title="Android" icon="android" href="/sdks/android">
    Kotlin SDK
  </Card>
</CardGroup>

### Flexible Configuration

Configure validation behavior per project:

* Enable/disable individual validation checks
* Set custom risk thresholds
* Whitelist/blacklist domains

### Platform Controls

* **Rate limiting** - 1,000/hr (client) or 5,000/hr (server)
* **Team management** - Invite team members with role-based access

## Get Started

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Get up and running in 5 minutes
  </Card>

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

  <Card title="Choose Your SDK" icon="box" href="/sdks/javascript">
    Browse SDKs for your platform
  </Card>

  <Card title="Dashboard" icon="gauge" href="https://vouch.expert">
    Manage your projects
  </Card>
</CardGroup>

## Pricing

Start free with 1,000 validations per month. Upgrade as you grow with transparent, usage-based pricing.

<Card title="View Pricing" icon="credit-card" href="https://vouch.expert/pricing">
  See all plans and features
</Card>