What it detects
- Disposable and temporary providers
- MX and mail-provider verification
- Role accounts (info@, admin@, support@)
- Homograph and lookalike domains
- Typo correction (did-you-mean)
When to use it
At signup to stop trial abuse, and before sending to protect your sending reputation.
Questions
How do you keep up with new disposable providers?
New throwaway services appear constantly, so a static list decays fast. Detection combines a continuously refreshed provider list with structural signals — domain age, MX configuration, and whether the domain behaves like a real mail host or a disposable front end.
What is a homograph email?
An address whose domain reads as a legitimate one but is not — Cyrillic characters standing in for Latin, or fullwidth spellings that fold onto a real ASCII name. They exist to survive a human glance, which is exactly why a machine should catch them.
Does this confirm the individual mailbox exists?
No, and be wary of anyone who says they can for a Gmail or Outlook address. Those providers accept mail for addresses that do not exist, so a per-mailbox verdict from them is a guess. We check what is actually knowable — that the domain accepts mail, what provider runs it, whether it is disposable or role-based — and report mailbox_exists as null rather than inventing an answer.
How to do this
Step-by-step, with the trade-offs named.