DisposableGuard

About DisposableGuard

A focused, self-contained HTTP API that detects disposable and temporary email addresses at signup.

What DisposableGuard does — and does not do

DisposableGuard answers one question: is this email's domain a known disposable/throwaway provider?

It does NOT do:

  • • Mailbox-level SMTP verification (we don't probe individual inboxes)
  • • Catch-all / role-based detection
  • • Bulk list cleaning
  • • Reputation scoring

For 90% of signup-flow use cases, the disposable check is the only check you need — and it's the only check fast and cheap enough to run on every signup.

How we operate

  • • Self-contained. No external API dependencies. All detection happens locally via optimized Set lookup.
  • • Built to last. We optimize for the customer who is still with us in five years.
  • • 99.9% uptime target.
  • • <5ms p50 latency on the disposable check.

Pricing philosophy

  • • Free plan covers indie projects (500 checks/month, no credit card).
  • • $9/month for unlimited checks flat — no per-check fees, no surprise bills.
  • • $149 one-time, unlimited forever option for solo developers who hate subscriptions.

Privacy

DisposableGuard does not store full email addresses. The API extracts the domain (e.g. mailinator.com), logs the domain + verdict, and drops the local part of the address. Full email never hits disk.

Links