Email-Validator - Made in Germany & 100% EU-GDPR compliant
Real Time Email Validation Stop bouncing, start connecting!
Validate email addresses without sending email: Improve sender reputation, deliverability and reduce bounce rates with Byteplant's email validator.

Validate Email Addresses with Byteplant's Email Validator

Email is the main point of contact between your business and the customer. Byteplant's email validator will help you reach your customers and keep your email sender reputation intact. We offer full end-to-end email verification solutions for all your email marketing needs.

Our Email Validation Solutions

Our email validation services will improve your sender reputation and delivery rates and reduce bounce rates at the same time.

Online Email Validation API
Online API
Validate email addresses right at the point of entry in registration forms on websites and in apps.
Email List Cleaning
Email List Cleaning
Email List Cleaning removes outdated or invalid email addresses from Excel/CSV files, CRM systems and customer databases.

Try our Email Validator for Free!

You can test our email address validation service for free - just register for a free API key.

Which Checks Does Email Validator Perform?

Our Email Validator uses a multi-layer email validation process, with every single email going through all of these validation and verification steps:

  • 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

During the entire email validation process, we never send any email to the recipient address.

Companies That Trust Us: Our Customers

With our extensive experience in email validation since 2003, Byteplant is a market leader when it comes to email validation services. Our software is made in Germany and offers high accuracy at maximum speed, GDPR compliant data security and flexible rates with a 30-Day Money Back Guarantee. We are working with companies like Adobe, Autodesk, Salesforce and many others. Protect your sender reputation and try our email validation services for free.

Email Validator FAQ

I'm considering to use your email validation service but I'm concerned about the privacy of my data. is a service operated by Byteplant, a company located in Germany and operating according to EU General Data Protection Regulation (GDPR) standards and the German Federal Data Protection Act (BDSG) - one of the strictest data protection and privacy legislations in the world (see for details).
We do not process or store email addresses for any purpose other than validation.
We do not share any client data with any third party at any time.
We retain personal data processed on behalf of our clients for as long as needed to provide services to our clients.
All data from API requests and batch/list processing will be automatically deleted within 14 days after the data has been made available to us.

Is there any risk that our IPs and domains get blacklisted by using your service?

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.

A valid email address just bounced. How can this happen?

Email Validator only tests if the recipient address exists. It does not test the antispam policies employed at the receiving mail server, as no mail is actually sent.

Make sure

  • your mail server's DNS data contains valid MX, PTR and SPF records,
  • the sender address exists and mail to this address is accepted by your server.
Also, in order to send email reliably, your mail server needs to have a good reputation. Cleaning your email lists before you start a new email marketing campaign of course helps a lot.

Why is my email address bad? I know it exists, because I just created it.

The email validator service caches results for several days, so if an email tested as bad, it will continue to show up as bad for a few days until it is re-evaluated.

You can use our Online Email Validation API to check up to 1000 email addresses for free -
just register for your free account and we send you an email with the details!