One API validates emails, fingerprints devices, and blocks bad actors - p95 under 300ms. Ship fraud protection in minutes, not months.
Genuine user, clean signals
Every fake signup costs you money -- infrastructure, support, polluted analytics, and conversion rates that lie.
Infra, support, polluted funnels, and subsidized abuse -- all preventable with a single API call.
Endless new accounts to exploit your free tier forever.
Disposable emails you can never reach, let alone convert.
Competitors lurking inside your product, stealing your playbook.
Bots flooding your funnel and destroying your growth data.
Vouch fuses email intelligence, device fingerprinting, and threat data into a single decision with p95 latency under 300ms.
160K+ disposable domains tracked. MX verification, catch-all detection, alias unmasking, role-account filtering, and real-time reputation scoring -- all in one call.
Persistent identity from 50+ signals. Survives incognito, browser switches, and cookie clears.
1.62M+ VPN, proxy, and TOR IPs. Data center detection + live reputation.
Allow, flag, or block -- with a confidence score you can tune to your risk tolerance.
Typed SDKs for React, React Native, iOS, Android, Node.
Track threats, tune rules, and export logs in real time.
Stop building fraud detection from scratch. Vouch integrates in minutes with typed SDKs for every major platform.
import { useVouch } from '@vouch/react'
function SignupForm() {
const { validate, fingerprint } = useVouch()
const handleSubmit = async (email: string) => {
const result = await validate(email, fingerprint)
if (result.recommendation === 'allow') {
createUser(email)
}
}
}Three steps to fraud-free signups.
Our SDK silently collects device signals and validates the email behind the scenes -- no UI changes required.
Our engine scores 50+ signals and returns a risk decision with p95 latency under 300ms.
Allow legitimate users instantly, challenge edge cases, block known abusers. You stay in control.
Straight answers for teams evaluating signup fraud, disposable email blocking, device intelligence, and risk scoring.
Trial abuse prevention stops the same person, bot, or organized abuse group from repeatedly creating free accounts to exploit credits, discounts, launch offers, or freemium limits.
Vouch combines email validation, disposable domain detection, device fingerprinting, IP and VPN intelligence, and configurable risk scoring to decide whether a signup should be allowed, flagged, or blocked.
Yes. Vouch checks disposable and temporary email domains, MX records, catch-all behavior, role accounts, aliases, and email reputation before a user reaches your product.
Vouch is designed for signup flows and returns risk decisions quickly, with p95 latency under 300ms on the marketing benchmark used across this site.
When Vouch flags a signup, your application can challenge the user, require a stronger verification step, review the account manually, or block it automatically based on your risk tolerance.
Vouch is built for SaaS, AI tools, developer platforms, marketplaces, fintech onboarding, and any product where free trials, promo credits, or account creation can be abused.
Start free. Scale as you grow. No surprises.
Join growth and security teams protecting their funnel with Vouch. Free to start, no card required.