Email Address Validation API

Improve deliverability by validating email addresses before you send.

Go to Docs

100 BILLION EMAILS/MO

Better delivery rates

More messages delivered to real contacts.

Use our real-time API to detect and suppress invalid email addresses. With a clean list, you reduce your bounce rate and perform better with mailbox providers to improve delivery.

Real-time Email Address Validation API
Machine Learning and mailbox provider-friendly tactics
Ability to identify mistyped, inactive, non-existent, disposable, or shared (team@, help@)

Minimize funnel leaks

Don’t lose leads to typos.

Connect the real-time API to lead capture forms to catch false entries right away. Prompt visitors to resubmit with the provided correction suggestion—no need for additional confirmation fields.

Guarantee recipients get the emails they want from you
Avoid losing contacts due to accidental email address typos
Remove additional fields like email address confirmation

Safe senders only

Stay in the ‘good sender’ category.

Our API doesn’t use the broken SMTP-handshake, which attempts to validate an email address by connecting to mailbox providers until receiving a response and then breaking the connection.

Avoid Spammer-affiliated tactics used by other vendors
Do not use the broken SMTP-handshake
Maintain mailbox provider trust

Learning at scale

Smart and safe—almost like hiring a 🤖.

Two robots sifting through email addresses

Put our massive dataset to work with a machine learning model that informs email address validity scoring. You can trust that we’re always working to improve your deliverability.