Disposable email checker: is this a throwaway address?
Use this disposable email checker before you rely on a new address. Temporary inboxes vanish after minutes.
- Known disposable services
- Provider and domain type
- Free first check
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無料チェックHow the disposable email checker works
Throwaway services reuse a small set of domains and mail servers, which makes them recognizable.
Paste the address
From a sign-up form, a marketplace chat, or an email header.
Match the domain
We compare it and its parent domain against known temporary inbox services.
Read the verdict
Disposable addresses are postmarked “Risky” with the reason spelled out.
What the checker looks at
Useful for sellers, community moderators, and anyone taking sign-ups.
Throwaway signals
- Temporary inbox domains
- Subdomains of those services
- Plus-tagged aliases
Mailbox facts
- Mail servers found
- Provider name
- Free or custom domain
Domain hygiene
- SPF record
- DMARC policy
- Catch-all behavior
A real person?
- Public avatar check
- Linked accounts in the full report
- Names where exposed
Where throwaway addresses show up
- Free-trial and coupon abuse
- Marketplace buyers who vanish
- Fake reviews and comments
- Contacts who will not share a real inbox
Disposable email questions
Is a disposable address always a scam?
No. Many people use them to avoid spam. They are a reason for caution when money or trust is involved, not proof of bad intent.
Can a new throwaway service slip through?
Yes. New services appear constantly. If the check says “Custom domain” for an odd-looking domain, treat it carefully.
What about Gmail aliases with a plus sign?
Those reach a real Gmail inbox. We note the tag but do not treat it as disposable.
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