Disposable email address checker
Throwaway inboxes exist to accept one message and disappear. They are perfectly deliverable the moment somebody signs up, which is why deliverability checks alone never catch them.
Free, no signup, no daily limit. We do not store what you check here.
Deliverable and worthless at the same time
This is the clearest case for keeping validity and risk apart. A throwaway address will accept your confirmation email today and stop accepting anything tomorrow. Report it as "invalid" and you are wrong; report it as "valid" with no further comment and you have told the customer nothing useful. The honest answer is that it is deliverable now and high risk.
Free is not the same as disposable
Gmail, Outlook and Proton are free providers, and blocking them costs you real customers - a large share of small businesses and sole traders use them as their working address. Disposable providers are a different category: the inbox is designed to be abandoned. Only the second is a fraud signal.
Questions
How current is the list?
The bundled list covers the highest-volume providers. New throwaway domains appear constantly, so treat a negative result as "not on the list" rather than "definitely permanent".
Should I block disposable addresses at signup?
Depends on the product. For a paid service, usually yes. For a free trial, blocking them also blocks privacy-conscious real users - weigh it as one signal.
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Role account checker
Check whether an email address is a shared role mailbox like info@ or support@ rather than a person. Free.
When you need more than a free tool
This page answers what can be determined offline and from public DNS. The API adds live carrier and mailbox verification, a calibrated confidence score, and the full evidence trail behind every verdict.
Credits never expire. Inconclusive verdicts are never billed. Cancel in one call. See pricing or read the docs.