BurnerBlock is a developer-first email verification and abuse prevention API that helps SaaS companies block disposable emails and stop free-trial abuse before accounts are created.

Does BurnerBlock detect disposable emails?

Yes, BurnerBlock maintains a real-time database of thousands of disposable and temporary email providers to block burner accounts instantly.

How does BurnerBlock stop free-trial abuse?

BurnerBlock detects common alias patterns (like Gmail + tags) and normalizes them to identify users trying to sign up for multiple trials using the same base email address.

Email verification & abuse prevention for modern SaaS

Stop fake signups, disposable emails, and free-trial abuse before accounts are created.

BurnerBlock detects burner emails, normalizes alias abuse, validates domain reputation, and returns a clear risk verdict through a developer-first API.

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Built for indie hackers, AI SaaS builders, and fast-moving developer teams.

companies & solo founders use burnerblock with

BetterAuth

Clerk

Supabase

Auth0

BetterAuth

Clerk

Supabase

Auth0

BetterAuth

Clerk

Supabase

Auth0

BetterAuth

Clerk

Supabase

Auth0

Features

Everything you need to stop signup abuse.

BurnerBlock provides the infrastructure you need to protect your SaaS from disposable emails, alias farming, and fraudulent accounts.

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"BurnerBlock reduced our fraudulent signups by 85% within the first 48 hours of integration."

MARCUS CHEN

CTO @ DATACORE AI

Disposable Email Detection: Block temporary and burner email providers instantly.

Alias Abuse Prevention: Normalize Gmail '+' aliases and catch repeated free-trial abuse.

Domain Reputation Checks: Validate suspicious domains, MX records, and risky providers.

Risk Scoring Engine: Get a clear risk score and allow/block verdict for every signup.

Plug-and-Play Integrations: Works seamlessly with modern auth providers and frameworks.

AI-Friendly Documentation: Built for Cursor, Claude, and vibe-coded workflows.

Free trials are getting abused.

Disposable emails, Gmail alias tricks, and fake signups quietly drain infrastructure, skew analytics, and waste resources. Most teams either ignore it or build fragile custom filters that break over time.

BurnerBlock gives you a single API to detect and block abuse before users even enter your system.

Not just email verification.

Traditional email verification tools only check whether an inbox exists. BurnerBlock is designed specifically to stop sophisticated abuse patterns:

Disposable emails
Alias farming
Free-trial abuse
Fake account creation
Low-quality signups
Built for modern SaaS

Live Analysis

34ms Latency

Network Reputation

99.9% SECURE

Threat Detection ActiveReal-time Sync

Developer Experience

Integrate in minutes.

No enterprise onboarding. No bloated dashboards. Just a fast API, clean responses, and copy-paste examples that work with the tools you already use.

Just a fast API

Clean responses

Copy-paste examples

Modern integrations

const result =  await burnerblock.verify(email)

if (result.blocked) {
  return res.status(403).json({
    error:  "Disposable email detected"
  })
}

{
  "risk": 92,
  "disposable": true,
  "aliasDetected": true,
  "mxValid": true,
  "verdict": "block"
}

Pricing

Simple pricing that scales with your product.

Start free while you build. Upgrade when your traffic grows.

Free

Perfect for indie hackers and small side projects starting out.

$0/month

Features

1,000 requests included
Disposable Detection
Alias Normalization
Community Support
Standard Latency

Pro

For growing SaaS products that need higher limits and priority support.

$25/month

Features

50,000 requests included
Domain Reputation
Risk Scoring Engine
Priority Email Support
Edge Network Latency
Custom Allow/Block Lists

Testimonials

Made for modern SaaS builders.

Success Story

“Setup took less than 10 minutes and immediately reduced fake signups. Exactly the kind of infrastructure tool indie hackers actually need.”

Alex Rivera

Founder of DevStream

Metric

98%

accuracy in detecting burner accounts.”

Developer Feedback

“Feels like it was built by developers who understand modern SaaS.”

Jordan Smith

CTO, SaaSFlow

Social Proof

“BurnerBlock gives us the confidence to scale our free tier without worrying about bot farms or abuse.”

Sarah Mitchell

Founder at AI Studio

Protect your free tier before abuse becomes expensive.

Block burner emails, fake accounts, and signup abuse with a single API call.

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