Terms of Service

Zellbox is a CRM and communication platform that integrates Google Calendar visit detection, the WhatsApp Business API, and a unified per-customer inbox. The service includes the web application, the API, the documentation, and any related tooling.

You must be at least 18 years old to use Zellbox. You're responsible for maintaining the confidentiality of your credentials and for everything that happens under your account. Notify us immediately at hello@support.zellbox.com if you suspect unauthorized access.

You agree to provide accurate information when signing up, and to keep your account information current.

You agree not to:

• Use Zellbox to send spam or unsolicited bulk messages
• Send WhatsApp messages that violate Meta's WhatsApp Business policies, including their Commerce Policy and Messaging Policy
• Harass, threaten, or abuse customers or third parties
• Upload data you don't have the legal right to process
• Reverse-engineer, scrape, or attempt to disrupt the service
• Use the service for any illegal activity

Violations may result in account suspension or termination. We may share information with Meta if WhatsApp policies are violated.

You retain ownership of all customer records, messages, and calendar metadata you add to or pass through Zellbox. By using the service you grant Zellbox a non-exclusive license to host, process, and transmit that data solely to provide the service to you.

You're responsible for the legal basis on which you process customer data — including obtaining any consents required under GDPR, CCPA, or other applicable laws.

To use Zellbox's Google Calendar features you must connect your Google Account. Zellbox requests the minimum necessary scope (https://www.googleapis.com/auth/calendar.events) to read and modify individual events on your primary calendar; we do not request access to manage entire calendars or other Google services. You can revoke this access at any time from your Zellbox account settings or directly from your Google Account permissions page.

Zellbox's use and transfer to any other app of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. Details of how we handle data received from Google are in our Privacy Policy.

Zellbox is a Meta-registered Tech Provider for the WhatsApp Business Platform (Cloud API). Sending WhatsApp messages through Zellbox is offered in two modes, gated by your subscription tier:

Free (Starter) tier — shared Zellbox number. Outbound messages are sent from a WhatsApp Business Account and phone number that Blockchain Web Services owns and operates. Conversation costs are absorbed by Zellbox; outbound volume is capped at the limits described on the pricing page. You do not need a Meta account on this tier.

Paid tiers — your own WABA. You connect your own WhatsApp Business Account through Meta's Embedded Signup flow inside the Zellbox app. By completing Embedded Signup you grant Zellbox the permissions whatsapp_business_messaging, whatsapp_business_management, and business_management for the purposes described in our Privacy Policy, Section 5. Zellbox acts on your behalf for the user-visible features in the app: sending the messages you configure, listing and creating templates, and surfacing your account-health signals (quality rating, messaging-limit tier).

Pricing on paid tiers. Per-conversation costs on the WhatsApp Business Platform are billed directly by Meta to your Meta Business Manager at Meta's published rates. Zellbox is not in the payment path for those conversation fees and does not mark them up. Your Zellbox subscription is a separate fee billed through Stripe.

Templates. Message templates require Meta's approval. Zellbox provides tools to draft, submit, and synchronise templates with the Meta API, but Meta is the final approval authority. Submission is subject to the WhatsApp template guidelines. Templates rejected by Meta will surface as REJECTED in your Zellbox UI with Meta's reason.

Your obligations. You are responsible for compliance with:

• The WhatsApp Business Messaging Policy — including obtaining recipient opt-in before sending any non-transactional message, respecting the 24-hour customer service window for free-form messages, and using approved templates outside that window.
• The WhatsApp Commerce Policy — restrictions on prohibited goods/services.
• The Meta Platform Terms and Developer Policies.
• All applicable laws on consumer communications, marketing consent (GDPR Art. 6 + ePrivacy in the EU, TCPA in the US, equivalents elsewhere), and data protection.

Misuse — sending spam, content prohibited by Meta's policies, or messaging recipients who haven't opted in — may result in Meta downgrading your phone number's quality rating, restricting your messaging tier, or suspending your WABA. Zellbox does not control these enforcement actions; they are at Meta's sole discretion. Repeated or severe violations may also result in Zellbox suspending or terminating your account under Section 3 (Acceptable use).

Revoking Zellbox's access. You may disconnect your WABA from Zellbox at any time, which revokes the access token Meta issued to us and stops all further messaging from your account. You may additionally remove Zellbox as a partner directly in Meta Business Settings → WhatsApp Accounts → WhatsApp Manager → Remove partner. Existing message history remains in your Zellbox account until you delete the account.

Service availability. WhatsApp Business Platform availability is determined by Meta. Zellbox is not liable for downtime, behavioral changes, pricing changes, policy changes, or feature deprecations originating from Meta. If Meta restricts or suspends your WABA, Zellbox cannot un-restrict it — recovery is between you and Meta.

Free-tier accounts (starter) are available without payment. Paid plans (pro, business) bill monthly through Stripe. Subscriptions auto-renew until cancelled. You can cancel from the billing portal at any time; cancellation takes effect at the end of the current paid period.

Plan limits (storage, files, API keys, monthly message allowance) reset on the 1st of each month. Overage handling is described in the pricing FAQ.

We do not offer pro-rated refunds for partial months, except where required by law.

You may delete your account at any time from account settings. We cascade-delete customer records, visits, conversations, and account metadata within 30 days, as described in the Privacy Policy.

We may suspend or terminate accounts that violate these Terms or Meta's WhatsApp Business policies, with notice where reasonably possible.

Zellbox is provided "as is" and "as available". We don't guarantee uninterrupted service, error-free operation, or a specific outcome from using the service.

Third-party integrations (Google Calendar, WhatsApp Business, Stripe) are subject to those providers' availability and policies. Zellbox is not liable for outages or behavioral changes in third-party services.

To the maximum extent permitted by law, Zellbox is not liable for indirect, incidental, special, consequential, or punitive damages, or for any loss of profits, data, or goodwill arising from or in connection with your use of the service. Our aggregate liability under these Terms is capped at the amount you paid us in the 12 months preceding the event giving rise to the claim.

We may update these Terms. We'll publish the new version on this page, update the "Last updated" date, and notify registered users by email of material changes. Continued use of Zellbox after the change constitutes acceptance.

Questions about these Terms: hello@support.zellbox.com.