Free Online Email Validator
Check Email Address Syntax and Catch Common Typos
Need to use Email Validator right now?
Before adding an email address to a mailing list or a form submission, it's worth a quick syntax check — a missing @ symbol, a stray space, or a malformed domain will bounce every time. This tool validates one or many email addresses at once against standard email format rules, and flags them clearly as valid or invalid.
Checks syntax (RFC-style format) only — it can't confirm the mailbox actually exists or accepts mail.
Features
- Runs entirely in your browser
- Privacy-first — your data is never uploaded
- Real-time, instant results
- 100% free, no sign-up required
- Works on desktop, tablet, and mobile
- No installation needed
Who uses this tool?
About Email Validator
Before adding an email address to a mailing list or a form submission, it's worth a quick syntax check — a missing @ symbol, a stray space, or a malformed domain will bounce every time. This tool validates one or many email addresses at once against standard email format rules, and flags them clearly as valid or invalid.
Beyond basic syntax checking, it also catches a set of the most common domain typos — gmial.com instead of gmail.com, yaho.com instead of yahoo.com, and similar near-misses — and suggests the likely correct spelling. These typos are surprisingly common in manually entered email addresses and are exactly the kind of mistake that silently breaks email delivery.
It's important to be clear about what this tool doesn't do: it checks format only, not whether the mailbox actually exists or accepts mail. True mailbox verification requires an SMTP handshake with the receiving mail server, which isn't something a browser-based tool can perform. For a genuine deliverability check on a large list, pair this format check with our Bulk Email List Verifier, which checks domain MX records.
How it works
- Paste one or more emails. Separated by commas, spaces, or newlines.
- Review the results. Each email is marked valid or invalid format.
- Fix flagged typos. Common domain typos are automatically suggested.
Examples
Checking a signup list
Output
[email protected] — did you mean gmail.com?; [email protected] — valid format