Email Validator
Verify email address syntax, detect temporary mailboxes, and fix common typos.
100% Client-side — we never see or store the emails you check.
Common Use Cases
Where email validation makes a difference
User Registration
Validate email format before form submission to reduce invalid signups and typos.
Mailing Lists
Clean email lists by detecting invalid syntax and temporary/disposable addresses.
Bot Protection
Block disposable email services commonly used by bots and spammers.
Typo Correction
Suggest fixes for common mistakes like gmil.com → gmail.com, saving lost customers.
Validation Features
This tool goes beyond simple Regex checking. It helps you clean your mailing lists or debug user registration issues.
- Syntax Validation: Checks if the email follows the official RFC 5322 standard.
- Disposable Detection: Identifies domains from services like TempMail or 10MinuteMail used by bots or spammers.
- Typo Fixer: Detects common mistakes like
user@gmil.comand suggestsuser@gmail.com. - Privacy First: All checks happen in your browser. Zero data is transmitted to any server.
Email Validation in Code
Basic email validation in popular languages. Note: sending a verification email is the only way to be 100% sure an address exists.
function validateEmail(email) {
const re = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
return re.test(String(email).toLowerCase());
}
console.log(validateEmail("test@example.com")); // true
console.log(validateEmail("invalid-email")); // false# pip install email-validator
from email_validator import validate_email, EmailNotValidError
try:
email = validate_email("test@example.com")
print(email.normalized) # "test@example.com"
except EmailNotValidError as e:
print(str(e))$email = "test@example.com";
if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
echo "Valid email address";
} else {
echo "Invalid email address";
}
// With additional DNS check
if (checkdnsrr(explode('@', $email)[1], 'MX')) {
echo "Domain has valid MX records";
}import "net/mail"
func isValidEmail(email string) bool {
_, err := mail.ParseAddress(email)
return err == nil
}
// Returns true for "test@example.com"
// Returns false for "invalid-email"Frequently Asked Questions
Can this check if an email really exists?
No tool can verify if an inbox truly exists without sending an email (due to security policies like Graylisting). However, our tool checks syntax and domain validity, catching 90% of user errors.
What is a disposable email?
Disposable emails (like TempMail) are temporary inboxes that self-destruct after a short time. They're often used to bypass registration forms without providing a real contact.
Is my data safe when using this tool?
Yes, 100%. All validation happens in your browser (client-side). We never see, store, or transmit the emails you check. You can verify this in your browser's Network tab.
What is RFC 5322?
RFC 5322 is the official internet standard for email message format. It defines valid email syntax, allowed characters, and domain structure. Our validator follows this standard.
Why block disposable emails?
Disposable emails are often used by bots, for spam, or to abuse free trials. Blocking them improves list quality and ensures you can contact your real users.
How accurate is typo detection?
We detect common typos in popular domains (Gmail, Yahoo, Hotmail, etc.) using Levenshtein distance. This catches ~80% of common mistakes like "gmial" or "gmaill".