CheckSignup

Stop fake signups
before they start.

Real-time email risk intelligence, canonical normalization, and disposable mailbox defense operating at the Edge.

Hundreds of Thousands of Disposable Domains
High-speed domain intelligence blocking disposable, catch-all, and burner mailboxes.
Deterministic Canonical Normalization
Strip Gmail dots/aliases and resolve Yahoo, Proton & Outlook aliases to eliminate duplicate accounts.
5,000 Free Credits Upon Signup
Immediate developer onboarding quota for AI Agents & SaaS builders. No credit card required.
Distributed global Edge network with zero plain-text PII storage
Developer Portal

Welcome back

Sign in to manage your API keys and validation queries.

Continue with Google
or with email
Forgot password?
Instant setup & default API token provisioning
GDPR compliant & zero plain-text PII storage

By signing in, you agree to our Terms of Service and Privacy Policy.