Disposable Email Address (DEA) API & Real-Time Burner Blocker
Users deploy burner emails from Mailinator, GuerrillaMail, and thousands of newly registered zero-day domains to drain free trials and poison analytics. EmailScore's DEA API blocks 50,000+ disposable domains with sub-millisecond precision.
Why Static CSV Blocklists Fail in Production
Burner services register cheap $0.99 domains every hour on Cloudflare or Namecheap to evade traditional blacklists. Static lists are outdated before you download them.
Sub-Microsecond Domain Ledger
Our proprietary high-density radix domain index evaluates domain membership in single-digit microseconds, avoiding database locks and external network queries.
MX Infrastructure Fingerprinting
Even when burner creators spin up custom domains, they point MX records to known disposable mail infrastructure. EmailScore clusters and flags disposable mail relays automatically.
Domain Age & Registrar Heuristics
Domains created within the last 24 to 72 hours carry high fraud correlation. EmailScore correlates domain creation timestamps with active DNS topology.
Configurable Domain Handling Rules
Tailor your application's response based on domain classification and threat certainty.
Established MX topology, active SPF/DMARC records, domain age >12 months, trusted corporate or consumer service.
Newly formed domain (<30 days), missing DMARC policies, or catch-all configured mailboxes. Prompt user for verified corporate domain.
Active burner provider, 10-minute mail service, or masked MX relay. Return 400 Bad Request: 'Please provide a permanent email address'.
Frequently Asked Questions
How fast is EmailScore compared to downloading open-source disposable domain lists?
Open-source GitHub lists are static, unmaintained, and contain hundreds of false positives (such as university subdomains or enterprise gateways). EmailScore maintains an active, verified catalog of 50,000+ active burner domains and resolves queries in 0.3ms via our globally distributed edge API.
Does EmailScore detect custom domains configured with disposable email services?
Yes. Many advanced abuse actors use services like SimpleLogin, AnonAddy, or Fastmail masked emails with custom domains. We fingerprint the underlying MX host routing and DNS configuration to detect forwarding and burner relays.
Can I test disposable email detection in my terminal?
Yes. You can test any domain instantly via curl: curl https://api.emailscore.io/v1/check -H 'Authorization: Bearer YOUR_API_KEY' -d '{"email":"[email protected]"}'.
Filter Burner Domains at Registration
Protect your product from throwaway accounts, spam submissions, and trial abusers with zero latency penalty.