A mistyped email address is one of the most common reasons messages bounce, accounts go unverified, and forms fail silently, and the usual culprit is a single transposed letter in the domain. This validator checks the syntax of an email address, confirms it has the required parts in the right order, and goes one step further: when the domain looks like a near-miss of a well-known provider, it suggests the correction. It performs syntax validation only, not mailbox verification, so it cannot tell you whether an address is actually owned by someone, but for catching typos at the point of entry it is exactly the check you need. Everything runs in your browser, so addresses you test are never sent anywhere.
Quick Answer: Enter an email address to check its syntax and catch likely domain typos.
Free Online Tool
Email Validator
Syntax first, then a second look at the domain.
How to Use the Email Validator
- Type or paste an email address.
- Press Validate to check its syntax.
- Read the verdict on the address structure.
- If a domain typo is suspected, consider the suggested correction.
- Fix the address and validate again before submitting it anywhere.
Key Features
- Full email syntax validation for the common address shape.
- Typo detection for popular mail domains.
- Suggested correction when a near-miss domain is found.
- Clear reasons for rejection, not just a pass or fail.
- Private checking with nothing uploaded or stored.
Best Practices and Tips
- The most valuable check here is the domain suggestion: gmial, gmai, and yahooo are caught before they cause a bounce.
- A syntactically valid address can still bounce if the mailbox does not exist; syntax is a necessary check, not a delivery guarantee.
- Plus addressing, such as name+shop@example.com, is valid and useful for filtering, even though some forms wrongly reject it.
- Trailing spaces from copy-paste are trimmed automatically, but a space inside the address always invalidates it.
- When a form rejects an address this tool accepts, the form’s own validation is probably stricter than the standard.
Common Mistakes to Avoid
- Assuming syntax validation proves an address is real and deliverable; it proves only that it is well-formed.
- Rejecting valid addresses with plus signs, dots, or subdomains because a simpler pattern was used.
- Trusting a typo suggestion blindly; it is a guess based on closeness, and unusual domains can resemble popular ones.
- Forgetting the top-level domain entirely, which is the most common structural omission.
Frequently Asked Questions
What does this validator actually check?
It checks that the address has the standard shape: a local part, an @ sign, a domain with at least one dot, and a valid top-level domain, with no illegal characters or spaces. It also compares the domain against well-known providers and suggests a correction when the domain is one or two edits away from a popular one.
Why is a typo suggestion useful?
Because the most common email error is a transposition or omission in the domain, such as gmial.com instead of gmail.com. The address looks almost right and passes a naive syntax check, so without a suggestion the sender only discovers the mistake when the message bounces or the verification email never arrives.
Can it tell me if a mailbox really exists?
No. Confirming a mailbox requires contacting the mail server, which this tool deliberately does not do, both for privacy and because many servers refuse to answer such queries. Syntax plus typo detection catches the errors you can fix yourself; deliverability is a separate question.
Are plus addresses really valid?
Yes. The plus sign is allowed in the local part, and services such as Gmail treat everything after the plus as a tag for filtering. Some older forms reject plus addresses incorrectly, but the standard permits them and this validator accepts them.
What makes an email address invalid?
Common causes are a missing @ sign, a missing domain or top-level domain, spaces inside the address, two @ signs, or illegal characters. The validator reports the structural problem so you can fix the specific part that is wrong.