ZI2 Verify

The only auditable email verifier

Verify emails.
Prove your results.

Every ZeroBounce, NeverBounce, or Kickbox result is a black box — you just trust the vendor. ZI² Verify signs every verification with an Ed25519 key, publishes the JWKS publicly, and gives your prospect a one-click way to prove the result was real. Same accuracy. Zero vendor lock-in.

Start free — 100 credits How receipts work →

No credit card. 100 verifications on us. Instant setup — no sales call.

1

Same accuracy as the incumbents

MX, SPF, DMARC, disposable + role-account detection, catch-all probing, gray-listing tolerance. The engine is ZI² Suite Mail Validator, in production since Q1 2026.

2

Signed at every check

Each result carries an Ed25519 signature over the exact checks that ran, when, and against what MX. The signing keys are public at verify.zi2.app/.well-known/zi2cert.jwks.

3

Verifiable by anyone

Paste any ZI² Certified receipt into /verify-receipt and prove it's real in one click — no account required. That's the wedge.