Email Address Validator
Utility ToolsCheck a list of email addresses
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
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History
All history →Email Address Validator — at a glance
Clean an email list by finding wrong formats, typos and duplicates before you send.
How to use it — step by step
Email addresses separated by new lines, commas or spaces.
Paste your input
Paste or type your content into the big input box.
Choose options
Pick the mode and options that fit what you need.
Validate Emails
Press the button. The result is created instantly on your device.
Copy the result
Check the output and press Copy to use it anywhere.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
Does it check if the inbox exists?+
No. It checks that the address is written correctly. Only sending a message can prove an inbox exists.
Are my emails stored?+
No. Everything happens locally in your browser.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.