Email Validator
Validate email addresses instantly. Check format, detect disposable domains, and verify deliverability.
Format Validation
Check email syntax against RFC standards for proper formatting.
Disposable Detection
Identify temporary email services like Mailinator, Guerrilla Mail, etc.
MX Record Check
Verify the domain has valid mail exchange records configured.
Deliverability
SMTP verification to check if the mailbox actually exists.
How Email Validation Works
Syntax Check
We validate the email format against RFC 5322 standards, checking for proper structure, valid characters, and correct domain formatting.
Domain Verification
We check MX records to confirm the domain can receive emails, and detect disposable email providers from our database of 100,000+ temporary domains.
Mailbox Verification
Using SMTP verification, we connect to the mail server to check if the specific mailbox exists without sending an actual email.
Provider-Specific Checks
For major providers like Gmail and Outlook, we run additional validation including Gravatar checks and provider-specific verification methods.
Why Validate Email Addresses?
Invalid email addresses cost businesses money through wasted marketing spend, damaged sender reputation, and missed opportunities. Every bounced email hurts your deliverability score, making it harder to reach real customers.
Protect your sender reputation by removing invalid addresses before they cause bounces. Email service providers track your bounce rate, and high rates can land your emails in spam folders or get your account suspended.
Save money on email marketing by only paying to send to real addresses. Most email platforms charge per subscriber, so removing invalid emails directly reduces costs while improving campaign metrics.
Improve data quality by catching typos and fake signups at the point of entry. Clean data leads to better customer insights, more accurate analytics, and higher conversion rates.
Frequently Asked Questions
How accurate is email validation?
Our multi-stage validation achieves 95%+ accuracy by combining syntax checks, domain verification, and SMTP mailbox verification. However, some email servers don't support verification queries, which can result in "unknown" status for certain addresses.
Will validation send emails to the addresses?
No. Our SMTP verification connects to mail servers to check if a mailbox exists, but never sends actual emails. This is a non-intrusive verification method that won't alert the email owner.
What are disposable emails?
Disposable emails are temporary addresses from services like Mailinator, Guerrilla Mail, and 10MinuteMail. Users create them to avoid spam or hide their identity. We detect these from a database of 100,000+ disposable domains.
Can I validate emails in bulk?
Yes! This demo validates up to 5 emails at a time. For bulk validation of hundreds or thousands of emails, use our API which supports batch processing of up to 1,000 emails per request.
Why do some emails show as "unknown"?
Some mail servers are configured to accept all emails (catch-all domains) or don't respond to verification queries. In these cases, we can't definitively confirm if the mailbox exists, so we report it as "unknown" rather than making assumptions.