Free disposable email checker
Paste one address or a signup list. For each row: is the syntax valid, is the domain a known disposable or throwaway domain, and is it a role inbox or an ordinary free provider such as Gmail.
Checked against 9,881 domains. Gmail and other common free providers are not disposable.
This check runs entirely in your browser. Your list is not sent to Uno Directory and is not stored. Matching uses 9,881 known disposable domains.
One address per line, or separated by commas. Up to 5,000 addresses.
Paste one email, or many. Put each address on its own line, or separate them with commas.
Click Check list. The summary counts total, disposable, invalid, and ok. Ok means the syntax is valid and the domain is not on the disposable list.
Copy the clean addresses or download them as CSV. The clean list keeps valid, non-disposable addresses. Role inboxes and free providers stay in that file, with a note in the CSV.
Disposable. Remove these from a signup or trial list. A known temp-mail domain is unlikely to belong to someone you can email later.
Invalid. The text is not an email address. Fix the typo or drop the row.
Role address. info@, admin@, noreply@, and similar shared inboxes can be real company addresses. Keep them when you meant to reach a team, and set them aside when you want individual users.
Free provider. Gmail, Outlook, iCloud, and similar are ordinary personal inboxes, not disposable. They stay in the clean list.
Domain list: 9,881 domains from disposable_email_blocklist.conf, published by the disposable-email-domains project under CC0. Pulled 14 October 2026 (commit d1a9c51). No domains were added beyond that file. Subdomains match too, so a name such as x.mailinator.com is treated as disposable when mailinator.com is on the list.
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