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Free Disposable Email Checker

Enter an email address or domain to instantly check whether it belongs to a known disposable or temporary email provider.

For a full check against our 262k-domain engine list, enter the complete email address.

What this tool checks

Disposable email providers offer temporary, anonymous mailboxes that expire after minutes or hours. They're widely used to bypass signup forms, claim free trials multiple times, or submit fake contact details. This checker tests against our database of 262,000+ known disposable domains.

For domain-only lookups, we query a curated shortlist of 200+ high-traffic disposable providers instantly. Submitting a full email address routes the check through our full engine list.

Why it matters

  • Block fake signups at the door — validate email at registration and reject disposable domains before they enter your CRM.
  • Improve list quality — disposable addresses inflate signup numbers but never convert; removing them improves open rates and reduces churn signals.
  • Reduce abuse — free-trial abuse, coupon farming, and vote manipulation all rely heavily on disposable email providers.

Usage limits

10 checks per minute per IP. Domain-only checks use a local shortlist (200 domains). Full email checks use our 262k-domain engine list and require Turnstile verification.

Need real-time disposable email blocking via API checks?

Upload a list of 100k addresses and get confidence-scored results in minutes. REST API, webhooks, CSV export.

Try it free →

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FAQ

Disposable (or throwaway) email addresses are temporary mailboxes provided by services like Mailinator, Guerrilla Mail, or 10MinuteMail. They receive emails for a short period and then expire or self-delete, leaving no lasting record.

Our engine checks against a curated list of 262,000+ known disposable domains, updated regularly. The free tool's domain-only path uses a shortlist of 200 high-traffic providers for instant results.

Yes — our REST API lets you check email addresses in real-time at the point of registration. See the API docs for the single-email endpoint.

No list is exhaustive — new disposable providers appear daily. For the most accurate results, combine disposable detection with MX and mailbox checks (available via our full Email Checker tool).
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