Disposable email

A disposable email address comes from a service that hands out temporary inboxes, often without registration, that expire after minutes, hours or days. People use them to get a download, a trial or a discount code without revealing their real address.

At the moment of signup a disposable address may be perfectly deliverable, so a mailbox check alone can pass it. Detection usually relies on recognising the domains these services use, which change frequently.

Disposable addresses inflate signup and lead counts with people you can never reach again. Emails sent to them later bounce or go unread, and they skew conversion data. For B2B teams they also signal low intent: someone who used a throwaway inbox on your demo form is not a qualified lead, and an outbound list shouldn't contain them at all.

Skrap.ai flags disposable addresses during verification. Teams use the API to check addresses at signup or form submission, and the free email verifier or a bulk CSV upload to clean existing lists.