Terms of Service

These Terms of Service are a binding agreement between you and CINELLI E TRINDADE TECNOLOGIA LTDA (trading as HalTuring) ("LitInboxes", "we", "us", "our"), the operator of the LitInboxes platform at litinboxes.com and app.litinboxes.com. By creating an account, using our website, free tools, or API, you accept them. If you do not accept them, do not use the service.

You must be at least 16 years old. If you use LitInboxes on behalf of a company or organization, you represent that you have authority to bind it, and "you" refers to that organization.

LitInboxes is an email deliverability monitoring platform: DNS and DMARC monitoring, blocklist and reputation tracking, spam score analysis, and email verification, together with alerting, health reports, integrations, an API and MCP server on eligible plans, and free public tools.

We improve the service continuously and may add, change, mark as beta, or retire features at any time. When a change materially reduces the core service you pay for, we will let you know in advance.

Our checks, scores, and reports are built from sources we do not control: public DNS, blocklist operators, mailbox providers, Google Postmaster Tools, and the content you submit. Those sources can be incomplete, delayed, or wrong, and mailbox providers change their behavior without notice.

LitInboxes therefore provides information, not outcomes. We do not guarantee that your email will reach the inbox, that a score reflects how any particular provider will treat your mail, or that following our recommendations will produce any specific result. Our guidance is technical information, not legal advice; you remain responsible for your own sending and its compliance with the law.

• Provide accurate, complete registration information and keep it up to date.
• Keep your credentials and API keys confidential. You are responsible for all activity under your account, including activity by organization members and by API keys and third-party apps you authorize.
• Notify us immediately at support@litinboxes.com if you suspect unauthorized use of your account.

Using the platform requires a paid subscription, billed in advance, monthly or annually, in US dollars, through our payment processor Stripe. Current plans, prices, and limits are listed on the pricing page. Limits include the number of monitored domains, monthly verification and spam check allowances, history retention, API access, and alert channels.

• Free trial: new customers can start a 14-day free trial. No payment method is required, and the trial does not convert automatically — it simply ends unless you choose a paid plan. Trials include reduced allowances, and each customer is eligible for one trial ever; creating additional accounts to obtain another trial is not allowed.
• Renewal and cancellation: subscriptions renew automatically until canceled. You can cancel at any time in your billing settings; you keep access until the end of the paid period, and we do not refund partial periods except where the law requires it.
• Plan changes: upgrades and downgrades take effect immediately and are prorated. Balances in your favor become account credit applied to future invoices; they are not paid out in cash.
• Allowances: monthly allowances reset each billing cycle and unused amounts do not roll over. Where top-up packs are offered, purchased top-ups persist until used and are consumed after your plan allowance.
• Auto top-up: optionally, you can enable automatic top-ups. When enabled, we automatically charge your saved payment method for the pack you selected whenever your balance falls below your chosen threshold. You can disable it at any time in billing settings.
• Reaching a limit: when you reach a plan limit the feature stops until the next cycle, an upgrade, or a top-up. We never charge overage fees automatically.
• Price changes: we will give you at least 30 days' notice, and new prices apply from your next renewal.
• Taxes: prices exclude taxes; where applicable, taxes are added or must be self-assessed by you.

If you purchase LitInboxes through a third-party platform or app store, billing is handled by that platform under its terms. One-time paid services, such as deliverability audits, are described and priced at the point of purchase and are paid in advance.

LitInboxes exists to help legitimate senders. You agree to use it only for domains, IPs, mailboxes, and email addresses that you own or are expressly authorized to manage, and you agree not to:

• Use the service to send, prepare, or assist unsolicited bulk email, or verify purchased, rented, scraped, or harvested address lists.
• Violate applicable laws, including anti-spam laws (such as CAN-SPAM and CASL) and data protection laws (such as the GDPR and the LGPD).
• Submit or transmit unlawful content, malware, or phishing material.
• Probe, disrupt, overload, or attempt unauthorized access to the service or its infrastructure.
• Circumvent rate limits, plan limits, or trial restrictions, including by creating multiple accounts.
• Resell, white-label, or provide the service to third parties as your own without our written consent, or access it to build or benchmark a competing product.
• Use the free tools in bulk or through automation beyond reasonable individual use.

We may suspend or terminate accounts that violate this section, and we may report unlawful activity to the relevant authorities.

You retain ownership of everything you submit: email content, address lists, domain configurations, and reports. You grant us a limited license to host and process that content solely to provide and protect the service.

You are responsible for the content you submit. Where it contains personal data about other people, you confirm that you have a lawful basis to process it and to share it with us, as described in our Privacy Policy. When you connect a third-party account, such as Google Postmaster Tools or Slack, you confirm that you are authorized to connect it.

LitInboxes monitors your sending; it does not send your email. You remain fully responsible for the messages you send and for their compliance with the law.

Integrations with third-party services, including Google Postmaster Tools, Gmail and Outlook connections, Slack, and Stripe, are subject to those providers' own terms and availability. We are not responsible for their outages, changes, or decisions, and we may adapt or discontinue an integration if a provider changes its APIs or policies.

Plans that include API access may create API keys and connect automated clients, including AI assistants via our MCP server. Keys and tokens are confidential; you are responsible for everything done with them. Rate limits apply to all automated access and we may adjust them to protect the platform. We may suspend keys or clients that degrade the service for others. Third-party clients you authorize act on your behalf, and their behavior is between you and their developers.

Our free tools are available without an account, are rate limited, are provided as is, and may be changed or discontinued at any time.

Reports and assessment results you share live at unlisted URLs: anyone with the link can view them. Share them deliberately.

The service, including its software, design, and content (excluding your content), belongs to LitInboxes and is protected by intellectual property laws. Our name and logo may not be used without our prior written consent.

If you send us feedback or suggestions, we may use them without restriction or compensation.

Our Privacy Policy explains what data we collect and how we handle it. It is part of these terms.

The service is provided "as is" and "as available". To the maximum extent permitted by law, we disclaim all warranties, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the service will be uninterrupted, error-free, or that results will be accurate or complete, as described in section 3.

Some jurisdictions do not allow certain warranty exclusions, so parts of this section may not apply to you.

To the maximum extent permitted by law, LitInboxes will not be liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, revenue, data, or business opportunities, including losses caused by email ending up in spam or being rejected.

Our total liability for all claims arising out of the service is limited to the amounts you paid us in the 12 months before the event giving rise to the claim. Nothing in these terms excludes or limits liability that cannot be excluded by law, including your mandatory rights as a consumer under applicable law.

You will indemnify and hold LitInboxes harmless from claims, damages, and expenses (including reasonable legal fees) arising from your content, your sending practices, your violation of these terms, or your infringement of third-party rights.

You can stop using the service at any time: cancel your subscription in billing settings and, if you want your data removed, request account deletion at support@litinboxes.com.

We may suspend or terminate your access for breach of these terms, non-payment, abuse, or security or legal risk, with notice where practicable. Upon termination your right to use the service ends, and your data is handled as described in the Privacy Policy. Export anything you need before your subscription ends.

We may update these terms as the service evolves. For material changes we will notify you by email or inside the application at least 30 days before they take effect. If you continue using the service after that, the new terms apply; if you disagree, cancel before they take effect.

These terms are governed by the laws of the Federative Republic of Brazil, and disputes will be resolved by the Brazilian courts. If you are a consumer, this does not remove protections or venue rights granted by the mandatory consumer protection laws of the place where you live.