無料オンラインメールアドレスバリデーター
メールアドレスの構文を素早く正確に検証します。
Validate up to 10,000 emails at once — disposable domain detection, role-based flagging, and detailed results.
Upgrade to Pro →Frequently Asked Questions
Is the メールアドレスバリデーター free to use?
Yes, the メールアドレスバリデーター on Allio Tools is completely free with no sign-up or registration required. It works directly in your browser.
How does the メールアドレスバリデーター work?
メールアドレスの構文を素早く正確に検証します。 No data is sent to a server — everything runs locally in your browser for maximum privacy and speed.
Do I need to install anything to use the メールアドレスバリデーター?
No installation needed. The メールアドレスバリデーター runs entirely in your web browser on any device — desktop, tablet, or mobile.
Is my data safe when using the メールアドレスバリデーター?
Completely safe. The メールアドレスバリデーター processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Does the メールアドレスバリデーター work offline?
After the page loads for the first time, the メールアドレスバリデーター works without an internet connection for all client-side processing. Tools that fetch live external data (such as DNS or network lookups) require an active connection.
How current is the data returned by the メールアドレスバリデーター?
The メールアドレスバリデーター fetches live data in real time each time you run it. Results reflect the current state of the server or domain at the moment of the request.
Why does the メールアドレスバリデーター sometimes return different results than other tools?
Results depend on the real-time state of the target server and DNS propagation, which can vary by geographic region and caching TTL. If you see inconsistencies, wait a few minutes and re-test — DNS changes can take up to 48 hours to propagate fully worldwide.
Does the メールアドレスバリデーター work on all browsers?
Yes. The メールアドレスバリデーター is built with standard browser APIs and works on all modern browsers including Chrome, Firefox, Safari, and Edge — on both desktop and mobile. No plugins, extensions, or third-party software are required.
How do I save or export my results from the メールアドレスバリデーター?
Select and copy the result text to paste into any document or app. For image tools, a Download button saves the file directly to your device. Your browser's built-in screenshot function also captures results quickly. No account or login is required.