Email Address Validator
Check email address syntax for pasted lists, signup QA, CSV cleanup, and support notes with browser-side processing.
Ready to use
Browser-side · no account · results stay on this page
This email validator checks syntax only.
It does not verify DNS records, SMTP response, mailbox existence, or deliverability.
One email per line
Line-separated lists are easiest to review.
Use for cleanup
Run syntax checks before importing a small list into another system.
Example
[email protected] passes a basic syntax check.
Assumption
You only need syntax screening.
Limitation
It does not prove an address can receive mail.
CSV cleanup
Spot obvious syntax issues.
Signup QA
Test sample inputs.
Support notes
Review pasted addresses.
Docs
Show valid and invalid examples.
Does this verify inbox existence?
No. It checks syntax only and does not perform DNS, SMTP, or mailbox verification.
How does it handle pasted email addresses?
The syntax check is designed for browser-side processing based on the current public implementation. Avoid pasting sensitive lists unless you have reviewed the implementation.
Can I paste multiple emails?
Yes. Paste one address per line to get a simple validity summary.
Why not check deliverability?
Deliverability checks require network lookups and provider behavior, which is outside this pure frontend tool.
Does this verify inbox existence?
No. It checks syntax only and does not perform DNS, SMTP, or mailbox verification.
How does it handle pasted email addresses?
The syntax check is designed for browser-side processing based on the current public implementation. Avoid pasting sensitive lists unless you have reviewed the implementation.
Can I paste multiple emails?
Yes. Paste one address per line to get a simple validity summary.
Why not check deliverability?
Deliverability checks require network lookups and provider behavior, which is outside this pure frontend tool.
Suggested workflow
Email cleanup workflow
Validate syntax, clean CSV rows, then convert data if needed.