Free tool
Check any address or domain against our disposable domain database. If we have not seen it before, an agent reads the domain and decides while you wait.
A disposable address is an inbox nobody owns. No signup, readable for a few minutes, then gone.
Alias forwarders sit next to them. SimpleLogin, Hide My Email, DuckDuckGo. A real mailbox is behind each one, so mail arrives, but a single account mints as many addresses as it likes. We tell you which of the two you have, because the right response is different.
Public blocklists catch the obvious ones. They miss the domain registered this morning, which is rather the point of registering it.
So we dispatch an agent to investigate the domain and decide what it actually is. When a domain serves nothing at all, it comes back suspicious rather than disposable. Taking mail while publishing no website is odd, but it proves nothing, and we will not claim more than the evidence carries.
Worth saying on the page built to run it: a domain check stops the lazy attempt and nothing more.
An email address is the one part of a signup that costs nothing to change. The device is not. That is what Rupt identifies, which is why this check lives inside an evaluation here rather than being sold as a product.
Book a demo and we'll show you what Rupt returns on your own traffic: the email verdict you just saw, plus the device, the IP, the scored risks, and a decision.