Email Address Validator
Validate email address syntax against the real rules, catch common domain typos, and flag disposable and role addresses. Free, runs in-browser.
Input
Result
The result appears here as you type.
What this tool is for
Checks the parts that can be checked without sending anything: syntax against the practical rules, obvious domain typos like gmial.com, role addresses such as info@ and admin@, and known disposable domains. Whether a mailbox actually exists cannot be determined from a browser, and honestly, it can barely be determined at all.
How to use it
- Paste one address or a whole list, one per line.
- Read the verdict per address, with the reason for any failure.
- Copy the valid addresses, or the rejected ones for review.
Frequently asked questions
Can you tell whether the mailbox exists?
Not from a browser, and not reliably from anywhere. Most providers accept every recipient at the SMTP stage and decide later, so probing produces confident answers that are wrong. The only certain test is sending a confirmation message.
Why is my valid address flagged?
Plus addressing, unusual top level domains and quoted local parts are all legal and all frequently rejected by naive validators. This tool accepts them, and flags rather than rejects the merely suspicious.