Terms of Service

These terms govern your use of ZenVerifier. By creating an account or uploading a list, you agree to them. If you’re using ZenVerifier on behalf of a company, you confirm you have the authority to bind that company.

The service

ZenVerifier verifies email deliverability for lists you upload. We tell you which addresses are likely to land, which to skip, and which are unclear. We don’t guarantee 100% accuracy — the underlying signal (SMTP, DNS, deliverability heuristics) is probabilistic. Targets like 99% accuracy are based on historical averages, not contractual commitments.

Acceptable use

You agree not to use ZenVerifier to:

• Verify lists you don’t have permission to use (purchased lists, scraped contacts where consent isn’t established under your jurisdiction)
• Run abusive volumes designed to harvest or enumerate addresses at a target domain
• Reverse-engineer the verification logic to mimic or bypass it
• Resell raw verification results without value-add (no white-label proxying without a separate agreement)
• Anything illegal in your jurisdiction or ours

We reserve the right to suspend accounts that abuse the service. We’ll tell you why and give you a chance to fix it before terminating, except for clear violations (CSAM, fraud, attacks on our infrastructure or others’).

Your account

You’re responsible for maintaining the security of your account, including the email address tied to it (which is how we authenticate you). If you suspect compromise, contact support immediately. We recommend keeping your inbox provider’s 2FA on.

Pricing & payment

Plan pricing is shown on the pricing page. We charge in USD via Stripe. Subscriptions renew automatically; you can cancel anytime from billing settings, with access continuing through the end of the current period. Pay-as-you-go credit purchases are one-time and never expire.

We may change plan pricing with 30 days’ notice via email. Existing subscribers keep their current rate through the next renewal; the new rate applies on subsequent renewals.

Refunds

We don’t offer routine refunds for credits already consumed (verifications already run). For bugs that caused you to burn credits incorrectly — wrong status returned, infrastructure outage — we credit your account for the affected verifications. Email billing@zenverifier.com within 30 days of the event.

Data ownership

Your data is yours. We don’t train models on your contacts, share them with third parties beyond the sub-processors needed to deliver the service (see the DPA), or sell them. We retain only what we need to bill you and meet legal obligations after your account closes.

Service availability

We aim for 99.9% uptime but don’t contractually guarantee it on Free, Starter, Growth, or Professional plans. Enterprise plans may include an SLA negotiated separately.

Liability

To the extent permitted by law, our total liability for any claim arising from your use of ZenVerifier is capped at the amount you paid us in the 12 months before the claim. We’re not liable for indirect, incidental, or consequential damages (lost profits, lost data, opportunity costs).

Termination

Either of us can terminate this agreement at any time. You can delete your workspace from settings or by emailing us. We can terminate for breach of these terms, non-payment, or to wind down the service (we’d give 90 days’ notice and refund unused subscription time).

Changes to these terms

We update these terms when our practices change and notify active accounts of material changes by email 30 days in advance. Continued use after the effective date means you accept the changes; if you don’t, you can cancel.

Governing law

These terms are governed by the laws of Portugal, without regard to conflict-of-law rules. Disputes go to the courts of Lisbon, Portugal, except where local consumer protection law gives you the right to your local venue.

Contact

Questions about these terms: legal@zenverifier.com.