Email Validator
Free email format validator: check address syntax in one second. Convenient for form validation, developer debugging, and list hygiene using local rules.
Input
Adjust options and run the tool.
Result
Your output appears here.
How it works
- Validation uses a simplified RFC 5322 regex.
- Common typos trigger a suggestion.
About this tool
What email format validation does
Before pasting an address into a signup form or script, check basic syntax: presence of @, a plausible domain, and a TLD. This tool runs local rules only — no remote DNS lookup, and your input never leaves the browser.
When to use it
Form debugging, quick list hygiene before a bulk import, and double-checking a copied temporary address. For alias / role / disposable-domain hints, use the email privacy checker.
With Freetempmail
Addresses from the homepage are already well-formed. Use this tool when you need to validate strings from elsewhere. After validation, pair accounts with a unique secret from the password generator.
Related tools
Free online email extractor: pull addresses from text, logs, or HTML in your browser. Runs locally with zero uploads and privacy warnings for bulk lists.
Free email privacy checker: detect aliases, role prefixes, and disposable-domain signals. Local rule checks ensure your email never leaves the browser.
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