Email Validator
Validate email addresses with RFC 5322 compliance checking and syntax validation. Detect disposable emails and verify common domains. 100% free and private - all validation happens in your browser.
RFC 5322 Compliant
Validate emails against official RFC 5322 standards for proper syntax and structure.
Bulk Validation
Validate multiple email addresses at once by entering one email per line.
Disposable Detection
Automatically detect and flag temporary or disposable email addresses.
Frequently Asked Questions
How do I validate email addresses?
Simply paste one or more email addresses into the text area (one per line) and click the Validate button. The tool will check each email against RFC 5322 standards, verify syntax, check for common domains, and detect disposable email addresses. Results are displayed with clear status indicators and explanations.
What is RFC 5322 email validation?
RFC 5322 is the Internet standard that defines the format for email addresses. Our validator checks for proper structure including the @ symbol, valid local part (before @), valid domain part (after @), correct character usage, proper length limits, and valid top-level domains. This ensures email addresses follow official standards.
Can I validate multiple email addresses at once?
Yes! You can validate multiple email addresses in bulk by entering one email per line in the text area. The tool will process all emails simultaneously and display individual results for each address with detailed validation status and explanations.
What are disposable email addresses?
Disposable email addresses are temporary email addresses provided by services like Mailinator, TempMail, or 10MinuteMail. These are often used for one-time signups and may indicate spam or low-quality registrations. Our tool detects and flags common disposable email providers.
Is my email data private and secure?
Absolutely. All email validation happens directly in your browser using client-side JavaScript. Your email addresses never get sent to any server, ensuring complete privacy and security. No data is stored or transmitted.
Why does my email show as invalid?
Email addresses can be invalid for several reasons: missing @ symbol, invalid characters in the local or domain part, improper dot placement, missing domain extension, domain labels that are too long, or non-compliant structure. Check the detailed reasons provided for each email to understand the specific issues.