Email Validator
Validate email address format and syntax
Calculator
Validation Checks
Email Breakdown
Sample Emails to Test
About Email Validation
This tool validates email format according to RFC 5322 standards. It checks for proper syntax including valid characters, @ symbol placement, domain structure, and top-level domain presence. Note that format validation cannot verify if an email address actually exists or can receive messages.
How to Use
Learn how to validate email addresses using our free online Email Validator tool.
Enter an email address
Type or paste the email address you want to validate into the input field.
View real-time validation
As you type, the tool performs instant validation checks showing format status, @ symbol presence, domain validity, and more.
Check detailed breakdown
Review the detailed validation breakdown showing local part, domain, TLD, and any specific formatting issues.
Use bulk validation (optional)
Switch to bulk mode to validate multiple emails at once. Enter one email per line and click Validate All.
Copy valid emails
Use the Copy Valid Emails button to copy all correctly formatted email addresses to your clipboard.
Frequently Asked Questions
Email validation is the process of verifying that an email address is formatted correctly according to RFC 5322 standards and follows proper syntax rules. This includes checking for a valid local part (before @), domain part (after @), and top-level domain (TLD).
RFC 5322 is the Internet standard that defines the format of email addresses. It specifies which characters are allowed in the local part (like letters, numbers, and special characters), the requirement for the @ symbol, and the rules for domain names.
No, this tool only validates the format and syntax of email addresses. It checks if the email follows proper formatting rules but cannot verify if the mailbox actually exists or can receive emails. For that, you would need an email verification service that connects to mail servers.
The local part (before @) can contain: letters (a-z, A-Z), numbers (0-9), and special characters like . ! # $ % & ' * + / = ? ^ _ ` { | } ~ -. The domain part can contain letters, numbers, and hyphens, separated by dots for subdomains.
Bulk validation allows you to validate multiple email addresses at once. Simply enter one email per line, and the tool will validate each email separately, showing which are valid and which have formatting issues. You can then copy all valid emails.
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