Developer infrastructure

Email verification without the nonsense.

KnockByte gives developers a simple API for secure, spoof-resistant email ownership verification. Your application requests a verification, KnockByte sends the challenge, and your server receives a trusted result.

Currently in development

Server-authoritative

Verification state is controlled by KnockByte on the server, not trusted from the client.

Secure by design

Verification codes are protected using cryptographic HMACs, expiration windows, and failed-attempt limits.

Built for developers

Straightforward APIs, project-scoped credentials, and transactional email designed for real applications.

Simple verification flow

POST /v1/verifications
Authorization: Bearer YOUR_API_KEY

{
  "email": "user@example.com"
}

POST /v1/verifications/{verification_id}/verify

{
  "verification_code": "345092"
}