Email Address Validator

With the Byteplant Real-Time Online Email Validator you can easily verify if an email address exists and is valid:

Validate Email Address

Enter the email address you want to verify (you can register for a free API key here).

Register for a free API key or upload a file to validate an email list!

Avoid Bad Email Reputation - Keep Your List Clean!

A recent ReturnPath study shows that bad email sender reputation, and not content, is responsible in 83% of all cases where email does not reach the intended recipients.

To protect your email sender reputation, do not accept bad email addresses, and regularly check your databases to make sure your email addresses are still good to use.

If you want to verify lots of email addresses in one go or if you need an online, real-time email address verification solution for your website, application or call center, we have exactly the right solution for you:

With our experience in email processing since 2003 - we are the makers of CleanMail, one of the leading antispam & email security solutions in the market - we know how to validate email addresses better than everyone else.
More than 500,000 users worldwide rely on our products & services every day.

Realtime Online Email Address Verification

Our real-time online email validation process includes all of the following tests:

  • Syntax verification (IETF/RFC standard conformance)
  • DNS validation, including MX record lookup
  • Disposable email address detection
  • Misspelled domain detection to prevent Typosquatting
  • SMTP connection and availability checking
  • Temporary unavailability detection
  • Mailbox existence checking
  • Catch-All testing
  • Greylisting detection

We do not send any email to the recipient address during the entire validation process. All processing is done on our servers, your IP addresses and domains are not affected in any way by the service - absolutely no blacklisting risk for your IPs and domains.

Online Email Address Validation API

The best way to capture good leads is of course to verify contact information right at the point of entry. That is why many businesses have decided to integrate our online email address verification API directly into their sign-up forms. This allows website visitors to correct errors in their email addresses instantly with the benefit that only valid email addresses are accepted and businesses can keep in touch with existing and prospective customers.

The online email address verification API can be easily integrated in websites and applications. Code examples are available in several programming languages.

Batch Email Address List Verification

Our full service automated batch email address list verification & cleanup service cleans CRM systems and customer databases from outdated or invalid email addresses and protects our clients from getting blacklisted and ruining their email sender reputation. As an added bonus, our service will also automatically detect duplicates.

Data Protection and Privacy

Byteplant is located in Germany and operates according to German and European data protection and privacy legislation which is one of the strictest in the world.

We are committed to protect your data and your privacy. Any data submitted to our email validation service is processed and stored for no purpose other than validation. All data from API requests and batch/list processing will be automatically deleted within 14 days after the data has been processed.

Please see our Data Protection and Privacy Policy for details.