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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 ([email protected])
  • Device fingerprinting - Track device reuse across emails
  • IP reputation - Detect VPNs, proxies, and fraud

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How It Works

1

Capture email

Collect the user’s email address
2

Validate

Runs comprehensive validation checks in parallel with intelligent early-exit logic for optimal performance
3

Get results

Receive detailed validation results with a recommendation: allow, flag, or block

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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.

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Developer-Friendly

Get started in minutes with our SDKs for every platform:

JavaScript

Browser applications

React

React with hooks

Node.js

Server-side validation

Next.js

Next.js integration

iOS

Swift SDK

Android

Kotlin SDK

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Flexible Configuration

Configure validation behavior per project:
  • Enable/disable individual validation checks
  • Set custom risk thresholds
  • Whitelist/blacklist domains

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Platform Controls

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

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Get Started

Quickstart

Get up and running in 5 minutes

API Reference

Explore the complete API

Choose Your SDK

Browse SDKs for your platform

Dashboard

Manage your projects

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Pricing

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

View Pricing

See all plans and features