Free email validator
Enter any email address to instantly check if it's valid, deliverable, and safe. No account needed — results in under a second.
Full validation is available in the ValidPeak dashboard — 100 free checks, no credit card.
What gets checked
Syntax & format
Validates RFC 5321 compliance and catches common typos.
Domain & MX records
Confirms the domain exists and has valid mail exchange records.
SMTP mailbox check
Verifies the mailbox exists without sending a message.
Disposable detection
Flags 10,000+ known disposable and temporary email providers.
Spam trap detection
Identifies patterns associated with honeypot addresses.
Risk scoring
Combines all checks into a deliverability risk score.
Frequently asked questions
Is this email validator free?
Yes. The single-address email validator is completely free with no signup required. For bulk validation or API access, ValidPeak offers paid plans starting at a free tier with 100 validations.
What does the email validator check?
The validator checks syntax and format, domain existence and MX records, mailbox existence via SMTP verification, whether the address is from a disposable provider, and known spam trap patterns. Each check is combined into a risk score.
Can the validator check if an email will bounce?
Yes. SMTP mailbox verification simulates a send without delivering a message. If the receiving mail server rejects the address, it will almost certainly bounce. This catches invalid mailboxes before you send.