fast & reliable

Email Verifier - Realtime Online Verification API

To capture good leads, you need to verify email address information right at the point of entry. Integrating our Realtime Email Address Validation API directly into the sign-up forms on your website allows your website visitors to correct errors instantly and only valid email addresses will be accepted.

Just register for a free API key and start testing our service.

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Available 24/7

Our Email Address Validation Online API is hosted at three different locations. We guarantee an availability of 99.9%, and requests will be typically answered within one second. Please see the API server status page for real-time availability information.

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Prices & Ordering

If you want to validate more than 100 email addresses, please have a look at our pay-as-you-go pricing model and the subscription plans we offer.

Why Choose Byteplant?

With our experience in email processing and verifying email addresses 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 Byteplant products every day.

data protection and privacy guaranteed

Data Protection and Privacy

Your data is safe with us. Only you have access to your data. We store your data only for the validation process. All data from API requests and batch/list processing will be automatically deleted within 14 days. Please see our Data Protection and Privacy Policy for details.