Is this email validator free?

Yes, completely free — no account, no subscription, and no usage limits. Just enter an address and check.

Does the tool send a test email to verify the address?

No. No email is ever sent. Validation works through syntax parsing and a DNS MX record lookup only — nothing touches the inbox.

What is an MX record and why does it matter?

MX (Mail Exchanger) records are DNS entries that tell the internet which mail servers handle email for a domain. If a domain has no MX records, it cannot receive email — so even a perfectly formatted address @that-domain.com would bounce.

Does passing both checks mean the mailbox actually exists?

Not necessarily. A valid format and existing MX records confirm the address is well-formed and the domain is mail-capable, but they cannot verify whether a specific mailbox (e.g., john@example.com) has been created on that server. The only way to confirm a mailbox exists is to send a real email and receive a reply.

Can I check multiple email addresses in bulk?

This tool is designed for single-address checks. For bulk verification, paste one address per line — the tool will validate them sequentially. There is no file upload; simply enter addresses in the text area.

✉️ Email Validator — Format Check & MX Record Lookup

Enter any email address and get two instant results: a syntax check (does the address follow the correct format?) and a live MX record lookup (does the domain actually have mail servers configured to receive messages?). Both checks run server-side for accuracy — no email is ever sent to the address, and nothing is stored.

Email address

How this works. Only the address you enter is sent to our server to fetch a public result — no private files are uploaded, and nothing you enter is stored.

About

This tool performs two distinct validation layers. First, a syntax check verifies that the address conforms to RFC 5322 rules — a local part, an @ sign, and a domain with at least one dot. Second, a live DNS query checks whether the domain has MX (Mail Exchanger) records, meaning real mail servers are registered to accept incoming messages for it. The MX lookup runs on our server so it bypasses browser DNS restrictions and gives accurate, real-time results. Note that passing both checks does not guarantee the specific mailbox exists — only that the address is correctly formatted and the domain is set up to receive email in principle.

How to use

Type or paste an email address into the input field.
Click "Check Email" to run the validation.
The syntax result appears first — pass or fail with a brief explanation.
The MX record result follows, showing whether the domain has active mail servers.
Review the combined verdict — valid format and deliverable domain, or see exactly what failed.

FAQ

Is this email validator free?: Yes, completely free — no account, no subscription, and no usage limits. Just enter an address and check.
Does the tool send a test email to verify the address?: No. No email is ever sent. Validation works through syntax parsing and a DNS MX record lookup only — nothing touches the inbox.
What is an MX record and why does it matter?: MX (Mail Exchanger) records are DNS entries that tell the internet which mail servers handle email for a domain. If a domain has no MX records, it cannot receive email — so even a perfectly formatted address @that-domain.com would bounce.
Does passing both checks mean the mailbox actually exists?: Not necessarily. A valid format and existing MX records confirm the address is well-formed and the domain is mail-capable, but they cannot verify whether a specific mailbox (e.g., [email protected]) has been created on that server. The only way to confirm a mailbox exists is to send a real email and receive a reply.
Can I check multiple email addresses in bulk?: This tool is designed for single-address checks. For bulk verification, paste one address per line — the tool will validate them sequentially. There is no file upload; simply enter addresses in the text area.