Question 1

Is this email verifier free?

Accepted Answer

Yes, completely free. No sign-up, no credit card, no limits within the session cap of 20,000 emails.

Question 2

How many emails can I verify at once?

Accepted Answer

You can verify up to 20,000 email addresses per session. Paste them directly or upload a .txt or .csv file.

Question 3

Is my email list kept private?

Accepted Answer

Yes. All processing runs entirely in your browser. Email addresses are never sent to or stored on any server. DNS lookups go directly from your browser to public DNS-over-HTTPS endpoints (Cloudflare and Google).

Question 4

What checks does this email verifier perform?

Accepted Answer

It performs five checks: (1) Syntax validation — checks for proper email format. (2) MX record lookup — confirms the domain has mail server records via DNS-over-HTTPS. (3) Disposable domain detection — identifies throwaway email services from a database of 720,000+ domains. (4) Role-based detection — flags addresses like admin@, info@, support@ that are rarely monitored by individuals. (5) Typo detection — suggests corrections for common domain typos like gmail.con or hotmial.com.

Question 5

How accurate is DNS-grade email verification?

Accepted Answer

DNS-grade verification confirms that the email domain exists and can receive mail (via MX records). It does not confirm that the specific mailbox exists — that requires SMTP-level verification. DNS-grade is highly reliable for filtering obviously invalid addresses, domains that no longer exist, and known disposable services.

Question 6

What file formats does the email verifier accept?

Accepted Answer

You can paste a list directly (newline, comma, or semicolon separated), or upload a .txt file (one email per line) or .csv file (the tool automatically detects the email column and skips headers).