Free tool

Disposable Email Checker

Find out whether an email address or domain belongs to a disposable (temporary) email provider.

Disposable email services hand out inboxes that vanish after minutes or hours. People use them to get past sign-up forms; mail sent to them later bounces or is never read. Our list covers about 10,000 disposable domains and is updated weekly.

Should I block disposable addresses at sign-up?

For free trials and anything with a cost per user, usually yes. For newsletters, many teams accept them but exclude them from sending after a few weeks.

Clean a whole list

Upload a CSV and get every address checked: syntax, domain, mailbox, catch-all and disposable.

Start with 100 free credits

Finds the email column in any CSV, keeps your other columns
Deliverable, risky, undeliverable or unknown, with the reason for each
Download everything, or only the addresses that are safe to send to
An API for sign-up forms and CRMs
Lists are deleted after 30 days