🎯 About Email Validator

Our Email Validator helps you verify if email addresses are properly formatted and valid according to email standards (RFC 5322). It checks username format, domain validity, and overall structure.

Perfect for web forms, mailing lists, user registration, and ensuring your emails reach the right inbox.

📝 How to Use

Validate Your Email:

  • Type or paste an email address into the input field
  • Click the "Validate Email" button
  • Review the validation results instantly
  • Check email components and structure
  • Fix any issues and re-validate

✨ Key Features

  • Instant Validation: Get immediate results
  • Component Breakdown: See username and domain separately
  • Format Checking: Verify proper email structure
  • RFC Compliance: Follows email standards
  • Domain Validation: Check domain format and TLD
  • Character Checking: Detect invalid characters
  • Length Validation: Check email length limits
  • Copy Function: Easy email copying

📧 Email Best Practices

  • Use Simple Formats: firstname.lastname@domain.com
  • Lowercase: Use lowercase for consistency
  • Avoid Special Characters: Stick to letters, numbers, dots, hyphens
  • No Spaces: Email addresses cannot contain spaces
  • Valid Domain: Use a real, existing domain name
  • Proper TLD: Use standard extensions (.com, .org, .net)
  • Keep It Short: Shorter emails are easier to remember
  • Professional: Use professional email for business

⚠️ Common Email Issues

  • Missing @: Email must contain exactly one @ symbol
  • Invalid Characters: Avoid spaces and special symbols
  • Too Long: Keep emails under 254 characters
  • Invalid Domain: Check domain spelling and format
  • Missing TLD: Must have extension (.com, .org, etc.)
  • Consecutive Dots: Avoid double dots (..)
  • Leading/Trailing Dots: Can't start or end with dot
  • Invalid TLD: TLD must be at least 2 characters

📋 Email Format Rules

Valid Email Format: username@domain.tld

Username Rules:

  • Can contain: letters (a-z), numbers (0-9), dots (.), hyphens (-), underscores (_)
  • Cannot start or end with a dot
  • Cannot have consecutive dots
  • Cannot contain spaces or special characters (@#$%^&*)

Domain Rules:

  • Can contain: letters (a-z), numbers (0-9), dots (.), hyphens (-)
  • Must have at least one dot
  • Must have a valid TLD (at least 2 characters)
  • Cannot start or end with a hyphen

❓ Frequently Asked Questions

Q: What is a valid email address?

A: A valid email follows the format username@domain.tld, where username contains allowed characters, domain is properly formatted, and TLD is at least 2 characters.

Q: Can email addresses have numbers?

A: Yes, both username and domain can contain numbers (e.g., user123@example.com).

Q: What's the maximum email length?

A: According to RFC standards, the total length should not exceed 254 characters, with username up to 64 characters and domain up to 255 characters.

Q: Can I use special characters in email?

A: Limited special characters are allowed in username: dots (.), hyphens (-), underscores (_), and plus (+). Spaces and most special characters are not allowed.

Q: Are email addresses case-sensitive?

A: Technically, the username part can be case-sensitive, but most email providers treat them as case-insensitive. It's best practice to use lowercase.