Email Validation API

Email Validation API — Syntax + MX + disposable-domain + role-based check with deliverability score.

What you get

• POST /v1/email/verify — primary endpoint.
• X-API-Key authentication, per-key rate limits, audit log.
• OpenRouter-backed where AI is involved — no model keys to manage on your side.
• Interactive Swagger docs at api-email-verify.knowlez.com/docs.

Plans

• Starter — $9/mo · 3,000 checks included · $0.003/check overage.
• Pro — $29/mo · 30,000 checks included · $0.002/check overage.