Free Email Validator
for developers.
Validate email addresses instantly in your browser. Check one email or paste a full list to quickly spot invalid formats.
Paste your email addresses
Validation results
Total
0
Valid
0
Invalid
0
Validated emails will appear here.
How it works
- Checks email syntax instantly
- Supports one email or multiple emails
- Shows valid and invalid entries clearly
- Counts total, valid and invalid emails
- Runs locally in your browser
Useful for
- Cleaning imported email lists
- Checking email format before sending
- Validating test data
- Quick QA for forms and databases
Privacy
- Your email data stays in the browser
- No upload, no signup, no server processing
Free online email validator
This tool helps you validate email address syntax directly in your browser. It is useful for developers, marketers, QA workflows and anyone who needs a quick way to check whether one or more email addresses look correctly formatted.
You can validate a single email or paste a list of addresses, one per line. The validator highlights which entries are valid and which ones are not, making it easy to clean up test data or imported contact lists.
This version focuses on email format validation. It does not check whether a mailbox actually exists or whether a domain can receive mail.
Example
john@example.com
hello@
support@devwrench.toolsPaste one email per line to validate multiple addresses at once.
Why use an email validator?
Invalid email addresses create problems in forms, imports, CRM lists and application testing. A simple email validator helps catch obvious formatting mistakes before they spread into your workflow.
It is especially useful when reviewing bulk data or checking user-submitted values quickly.
FAQ
Does this check if an email address really exists?
No. This version checks email format and syntax only.
Can I validate multiple email addresses?
Yes. Paste one email per line and validate the whole list at once.
Can I copy only the valid emails?
Yes. Use the “Copy valid” button to copy only the valid addresses.
Is this email validator safe?
Yes. Everything runs locally in your browser and your email list is not uploaded.
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