Email Validator - Free Online IT Tool

📧 Email Validator

Verify the format and domain mail servers (MX) of an email address.

ℹ️ About Email Validator

The Email Validator is a two-stage verification utility designed to ensure that an email address is both syntactically correct and capable of receiving mail. In the first stage, it uses a robust Regular Expression (Regex) to check if the address follows the standard user@domain.tld format. In the second stage, it performs a live DNS lookup to see if the domain has valid Mail Exchange (MX) records.

This tool is essential for developers building registration forms, marketers cleaning their contact lists, and system administrators troubleshooting delivery issues. By verifying the existence of MX records, you can rule out typos in the domain name and confirm that the destination server is configured to accept incoming SMTP traffic. This helps reduce "bounce-backs" and improves the overall deliverability of your communications.

📖 How to use Email Validator

1. Enter the full email address you wish to validate.
2. Click 'Run Tool' to perform the syntax and DNS checks.
3. Review the 'Status' to see if the format is valid.
4. Check the 'MX Records' list to see which servers are responsible for handling mail for that domain.

❓ Frequently Asked Questions

Does this tool check if the individual mailbox exists?

No. This tool verifies the format and the domain's server configuration. Checking for individual mailboxes (VRFY) is often disabled by modern mail servers to prevent spam harvesting.

What does an 'Uncertain' status mean?

It means the email format is correct, but the tool could not find any MX records for the domain. This usually indicates a typo in the domain name or a configuration issue on the recipient's end.