Disposable Email Checker

How to use

1. 1Pick a mode. Use Check one address for a quick test, or Check a list to clean a CSV export, lead list, or newsletter file.
2. 2Paste your input. Single mode accepts an email, a Name <addr> format, a bare domain, or even a full URL. Bulk mode accepts mixed separators: one per line, commas, semicolons, or pipes.
3. 3Read the verdict. Single mode shows a colored card with the matched root. Bulk mode shows a Summary, a Clean list, a Disposable list, and a per-row verdict for the first 200 rows.
4. 4Use the Copy buttons to export the Clean list or the tab-separated Disposable list. Replace with clean only rewrites the input box to keep only the addresses that passed.
5. 5Treat the result as advisory. The list catches common burner providers but cannot catch every brand-new domain, so combine the check with a verification email for sign-ups that matter.

About this tool

Disposable Email Checker tells you whether an address or domain belongs to a known temporary mail provider, so you can spot 10minutemail, mailinator, yopmail, guerrillamail, temp-mail, maildrop, dispostable, throwawaymail, and many other burner inboxes before they reach your CRM, free-trial flow, or newsletter list. Single-check mode accepts a plain address (user@example.com), a Name with angle brackets (Alice <a@example.com>), a bare domain (example.com), or a pasted URL, and returns an immediate verdict with the registrable root that matched. Bulk mode takes a list with mixed separators (newlines, commas, semicolons, pipes) and splits it into a Clean list and a Disposable list, both copyable; the disposable list is tab-separated so you can paste it into Google Sheets, Excel, Notion, or a CRM import and keep both the original address and the matched root. Matches are exact on the registrable root, with subdomain rollup, so mail.10minutemail.com still resolves to 10minutemail.com without falsely flagging real domains that happen to contain a similar substring. The curated list covers several hundred well-known disposable, throwaway, and burner domains drawn from public mail-rotator services and updated periodically. Everything runs locally in your browser. There are no MX lookups, no SMTP probes, no third-party API calls, no signup, and no upload. Useful for B2B SaaS founders gating free trials, growth teams cleaning lead-form submissions, newsletter operators trimming junk subscribers, support teams triaging abusive contact forms, and developers wiring a quick blocklist into a sign-up endpoint. The tool is honest about its limits: new disposable domains appear constantly, so a clean verdict is not a guarantee. Pair the check with a verification email or a deeper service for anything that costs money to deliver.

Free to use. Works in your browser. No signup, no login.