Email Validator
Check whether an email address is properly formatted (local@domain.tld). Free and private, right in your browser.
Paste in one email or a whole list and instantly see which ones are correctly formatted and which are broken, so you can clean up a signup form, a mailing list, or a spreadsheet before you send anything.
How to use it
- Paste in a single email or a list of addresses
- Run the check to see which pass and which fail
- Copy or export the valid ones
Frequently asked questions
- Does this check if the email address actually exists or can receive mail?
- No. It checks the format and structure (things like the @ symbol, domain, and valid characters) but doesn't send anything or verify the mailbox is real. For that you'd need a verification service that pings the mail server.
- Will it catch typos like gmial.com or missing dots in the domain?
- It flags addresses with malformed domains (no dot, invalid characters, etc.), but it won't know that "gmial.com" is a misspelling of "gmail.com". That requires knowing real-world domain names, not just syntax rules.
- Is my list of emails uploaded anywhere?
- No. The checking happens entirely in your browser, so pasted addresses never leave your device.
- 1
Nothing is uploaded
The file never leaves your device. There is no server to send it to, so there is nothing to leak, log, or subpoena.
- 2
No signup, no limits
No account, no email, no daily cap, no watermark, and no paid tier waiting behind the third file.
- 3
Works offline
Load the page once and it keeps working with the network off, because all the work was always happening locally.