Free Disposable Email Checker
Detect temporary, throwaway, and burner email addresses instantly. Verify MX records and SMTP connectivity. Free to use, with a public API for developers.
Emails Checked
Disposable Domains
Community Reports
Need this in your app or AI agent?
Block disposable signups before they hit your database, or let an MCP-compatible agent check emails directly. 1,000 free API requests/day, no credit card.
curl 'https://disposablecheck.irensaltali.com/api/v1/check?email=user@tempmail.com' \ -H 'X-API-Key: YOUR_KEY'
https://disposablecheck.irensaltali.com/mcp X-API-Key: YOUR_KEY
Frequently Asked Questions
What is a disposable email address?
A disposable email address is a temporary inbox created on a throwaway domain (e.g. mailinator.com, tempmail.com). Users create them to avoid giving out their real address, then abandon them. They are commonly used to bypass sign-up requirements, exploit free trials, and avoid spam.
How does DisposableCheck detect disposable emails?
DisposableCheck checks the email's domain against a continuously updated blocklist of 120,000+ known disposable domains aggregated from multiple authoritative sources. Optionally, it performs live MX record lookup and SMTP verification to confirm whether the address can actually receive mail.
Is DisposableCheck free to use?
Yes. The web tool is completely free with no account required. The API is free up to 1,000 requests per day with a free API key. No credit card is needed.
What is deep email verification (MX & SMTP check)?
Deep verification goes beyond domain list matching. It queries DNS for the domain's MX records to verify the domain accepts email, then performs an SMTP handshake to confirm the specific mailbox exists and is not a catch-all. This adds 1–3 seconds of latency but catches disposable addresses that use legitimate infrastructure.
Can I use DisposableCheck in my application?
Yes. DisposableCheck provides a REST API (GET /api/v1/check) and an MCP server endpoint for AI agents. Get a free API key at disposablecheck.irensaltali.com/get-api-key. The API supports JavaScript, Python, cURL, and any HTTP client.
