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Email Validator

Check format, catch likely typos, and flag known disposable domains.

Runs in your browserNo sign-up required
Batch Check

Paste a list of emails, one per line or comma-separated.

Beyond a Bare Regex Check

Format validation alone misses two of the most common real-world signup problems — a typo in a well-known domain (gmial.com instead of gmail.com), and a deliberately disposable address used to bypass a signup limit. This tool checks for both, using edit distance for typos and a maintained list for known temp-mail domains, without ever attempting a riskier mailbox-existence check.

How to Use This Tool

  1. 1Type an email addressChecked live against format rules, a typo check, and a disposable-domain list.
  2. 2Review the resultA clear pass, a typo suggestion, or a disposable-domain flag.
  3. 3Or batch-check a listPaste many emails at once — one per line or comma-separated — for a quick results table.

Good to Know

  • Typo detection compares the domain against a list of major providers using edit distance — "gmial.com" is one swap away from "gmail.com" and gets flagged, but an unusual, genuinely different domain won't be.
  • Disposable-domain detection checks against a maintained list of known temp-mail services — useful for signup forms where throwaway addresses are a common way to abuse a free trial or referral bonus.
  • This checks format and known-domain patterns only — it can't confirm a specific mailbox actually exists, since that requires an SMTP-level check that real mail providers often treat as abuse when done at scale.
  • None of what you type here is sent anywhere — validation runs entirely in your browser.

Frequently Asked Questions

Can this tell me if an email address actually exists?

No — true mailbox verification requires contacting the recipient's mail server directly (an SMTP-level check), which is easy for providers to flag as abusive at any real scale. This tool checks format, common typos, and known disposable domains instead, which covers most real-world validation needs without that risk.

How does typo detection decide what to suggest?

It measures edit distance (how many single-character changes separate two strings) between the typed domain and a list of major email providers — a distance of 1 or 2 characters triggers a suggestion, further than that doesn't.

What counts as a disposable email domain?

Services specifically designed for temporary, throwaway inboxes (Mailinator, Guerrilla Mail, 10 Minute Mail, and similar) — checked against a maintained list, not every domain that happens to look unusual.

Is this free to use?

Yes, completely free, with no limit on single or batch checks.