Developer Documentation

Choose how you want to validate.

Start with one email, process a list, upload a file, or connect a platform.

Real-time validation for one address.

Programmatic list validation.

No-code CSV validation.

Connect E8Y to business platforms.

Language-specific implementation guides.

Receive job and account events.

Reference

Public keys for restricted client-side requests and secret keys for server-side and bulk access.

Valid, risky, and invalid with stable machine-readable reason codes.

Documented by key type, endpoint, and account plan.