About the Email Validator
The Email Validator checks whether an email address is written in a valid format, catching typos such as missing @ signs, spaces, double dots or invalid characters before they reach your database or mailing list. Clean email data means fewer bounced messages and better delivery for newsletters and transactional emails.
How to Use the Email Validator
- Enter the email address you want to check.
- Click Validate.
- Read the result and correct the address if it is marked invalid.
What Makes an Email Address Valid?
An address has a local part, an @ sign and a domain, such as name@example.com. The local part may contain letters, numbers, dots, plus signs and some other characters, but cannot start or end with a dot or contain two dots in a row. The domain needs at least one dot and a valid extension.
Format Check vs Real Mailbox
A valid format does not prove that the mailbox exists or that the person owns it. For sign-ups, always send a confirmation email with a link. This double opt-in protects your sender reputation and keeps fake and mistyped addresses off your list.
Common Typos to Watch For
gmial.com or gamil.com instead of gmail.com, .con instead of .com, a comma instead of a dot, and spaces copied from a document. Many sign-up forms suggest a correction when they see these typos.
Frequently Asked Questions
Does this tool send an email?
No. It checks the format of the address only.
Are plus addresses valid?
Yes. name+news@gmail.com is valid and is delivered to name@gmail.com.
Are uppercase letters allowed?
Yes. Domains are not case-sensitive, and in practice almost all providers treat the local part as case-insensitive too.
How should I validate emails in my app?
Use a simple format check on the form, then confirm the address by sending a verification link.