Disposable Email Detector
Check whether an email address or domain belongs to a disposable (temporary) email service.
Runs in your browser Your input never leaves your device.
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About this tool
Paste email addresses or domains, one per line or separated by commas, and the tool says which are on a list of disposable email services: sites that give out short-lived inboxes, often used to avoid signing up with a real address. It also catches subdomains: if mailinator.com is listed, anything.mailinator.com is too. The list is the open disposable-email-domains project (CC0), a snapshot of 3 October 2026 with 9,203 domains, and it is checked in your browser, so the addresses you paste are not sent anywhere. New disposable services appear every day and some are never listed, so a domain that is not on the list can still be disposable; likewise some listed domains also have real users. Use the result as a signal, not a verdict. Do not block people on this alone if a wrong guess would cost you a customer. Everything is processed in your browser and nothing is uploaded.
How to use it
- Paste email addresses or domains.
- Read which ones are on the list.
- Note the snapshot date at the bottom.
Common problems
- A temporary address was not detected
- The list cannot know every service. Combine it with other checks, such as confirming the address by sending a link.
- A real person's address was flagged
- Some domains on the list also have real users. Do not treat the result as proof.
- The list seems old
- It is a snapshot taken on the date shown. New domains appear daily, so use a live service where accuracy matters.