Email Address Validator
Check email addresses for syntax, length, typos such as gmial.com, disposable providers and role names. Check thousands at once and export CSV.
Email addresses
Stays in your browserShortcuts: Ctrl+Enter run · Ctrl+Shift+C copy result · / search (use ⌘ on Mac)
Free Online Email Address Validator
Paste one address or a whole list. Each line gets a result, with a reason when it is not valid and a suggestion for common typos. It gives developers a quick browser-based way to solve a focused email address validator task before moving the result into a project.
How to use Email Address Validator
Put each address on its own line. The check looks at the address itself; it does not send any email or ask the mail server.
Common mistakes
- Treating "looks valid" as "exists": a valid-looking address can still bounce.
- Relying on the disposable list alone: new throwaway providers appear all the time.
Frequently asked questions
Does it check that the mailbox exists?
No. It checks the written form and common problems. Only sending a message can show that a mailbox exists.
What is strict RFC mode?
It accepts everything the email standard allows, such as quoted names and single-word domains, even though most providers reject them.
How are typos found?
The domain is compared with popular providers such as gmail.com. If it is one character away, a suggestion is shown.
Is anything uploaded?
No. This tool runs in your browser and nothing you enter is sent to a server.
How do I use this email address validator tool?
Use the interactive controls above; processing stays in your browser and the result is intended as a practical starting point for development work.
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