Does it check whether the mailbox actually exists?

No. It only checks the format and whether the domain has a mail server (MX) configured — it does not verify that the actual mailbox exists.

If there's no MX record, is the email definitely invalid?

It likely means the domain can't receive mail, but some services can handle mail via an A record too, so it can't be called 100% certain.

Is the email I enter stored?

No. Only the domain is sent to the server for lookup after format checking in your browser.

📮 Email Verifier

Check an email address's format and whether its domain has a mail server (MX). (Doesn't verify the actual mailbox exists)

Email address

How to use

Enter the email address to check.
Click "Check".
The format and MX-record status of the domain are shown.

🎯 Use Cases

Catch typos before a signup form is submitted
Pre-validate a marketing mailing list
Check that a business mail domain is properly configured

Example

Input

user@gmail.com

Output

✅ Email format is valid
✅ Domain (gmail.com) has a mail server (MX) configured

The address matches the format rules and the gmail.com domain has a mail server (MX record) that can receive mail. It does not verify that the specific mailbox itself exists.

FAQ

Does it check whether the mailbox actually exists?: No. It only checks the format and whether the domain has a mail server (MX) configured — it does not verify that the actual mailbox exists.
If there's no MX record, is the email definitely invalid?: It likely means the domain can't receive mail, but some services can handle mail via an A record too, so it can't be called 100% certain.
Is the email I enter stored?: No. Only the domain is sent to the server for lookup after format checking in your browser.