Disposable email checker
Check an email address or domain for disposable providers and other signup-risk signals.
Try
Check the signals behind an email address
Disposable status is one part of signup risk. This check also reviews mail servers, public providers, role-based addresses, and suspicious address patterns before returning an allow, review, or block decision.
- Detect known disposable email providers
- Check mail-server availability
- Identify role-based and public-provider addresses
- Return an explainable signup decision
0 min
They sign up
A throwaway address goes into your form like any other.
2 min
They confirm
The link is clicked from the temporary inbox. The account is live.
10 min
The inbox expires
The provider drops the mailbox and everything sent to it.
After
You cannot reach them
Resets, receipts, and product mail bounce or vanish.
Common questions
- What is a disposable email address?
- A temporary inbox that expires within minutes. It exists to clear a signup form, and nothing you send later gets read.
- Why do disposable signups matter?
- They never convert, and they are how one person takes a free trial ten times. Mail to them bounces, which hurts your sending reputation.
- Will this catch a brand-new disposable domain?
- Often, not always. New ones appear daily. A clean result means nothing known matched, so the check also reads mail servers and address patterns.
- Should every disposable address be blocked?
- That depends on your product. The check suggests an action. Your own policy decides what happens.
- What else does this check return?
- Mail servers, shared mailboxes like support@, public providers such as Gmail, plus-aliases, privacy relays, and likely typos.
- Can I run this check from my own code?
- Yes, with one POST request to the SignupScore API. The free tier covers 250 checks a month with no card.
Use these checks during signup
The API returns allow, review, or block with the reasons behind it.