Terms of Service

1. Acceptance of Terms

These Terms of Service (the "Terms") are a binding agreement between you and Sentry Relay ("Sentry Relay", "we", "us"), the operator of sentryrelay.com, in.sentryrelay.com, our REST API, MCP server, SDK, srelay CLI, developer console, and related services (together, the "Service").

By accessing the Service, creating an account, generating an API key, or otherwise using the Service, you agree to be bound by these Terms and our Privacy Policy. If you use the Service on behalf of a company or client, you represent that you have authority to bind that entity, and "you" includes it. If you do not agree, do not use the Service.

You must be at least 18 years old and able to form a binding contract.

2. The Service

Sentry Relay provides receive-only email inboxes, optional dedicated US phone numbers for inbound SMS and voice, a TOTP secret vault, deterministic extraction of one-time passcodes and magic links, and related developer tooling for autonomous software and automated workflows.

Sentry Relay inboxes are for receiving authentication and verification messages only. The Service is not an outbound or conversational email service.

We may modify, add, or discontinue features at any time. Where a change materially reduces functionality of a paid plan, we will give reasonable notice.

3. Accounts, Workspaces & API Keys

You must provide accurate registration information and keep it current. You are responsible for all activity under your account, workspace, and API keys (including keys embedded in third-party bots, browsers, or client environments).

Keep API keys and credentials confidential. Notify us promptly at security@sentryrelay.com if you suspect unauthorized access. We may revoke keys we reasonably believe are compromised.

Workspace owners are responsible for the actions of members they invite and for managing member roles.

4. Acceptable Use

You may use the Service only for lawful purposes and only to receive verification messages for accounts that you own or are expressly authorized to access. You agree not to:

• Access, or attempt to access, any third-party account without the account holder’s authorization, or use the Service to bypass security controls you are not permitted to bypass;
• Use the Service for spam, phishing, fraud, harassment, credential stuffing, account takeover, mass account creation, or evasion of a third party’s anti-abuse or rate-limiting measures;
• Violate the terms of service of third-party sites or services that you automate, or any applicable law, including laws on unauthorized computer access, telecommunications, and consumer protection;
• Use phone numbers or inboxes for unlawful, deceptive, or abusive messaging or calling, or in violation of carrier rules;
• Reverse engineer, decompile, or attempt to extract source code of the Service (except as permitted by law), or scrape the Service other than through documented APIs;
• Probe, scan, or test the vulnerability of the Service, or interfere with or disrupt its integrity, performance, or other customers’ use, including exceeding documented rate limits;
• Resell or provide the Service to third parties as a competing standalone product, except as permitted by your plan (for example, agencies using isolated client identities);
• Store or transmit content that is unlawful, infringing, malicious, or that you lack the right to process; or
• Use the Service in connection with high-risk activities where failure could lead to death, injury, or significant property damage.

We may investigate suspected violations and suspend or remove content or access, and may report unlawful activity to authorities.

5. Your Data and Third-Party Messages

You retain all rights in the messages, secrets, and other data you submit or receive through the Service ("Customer Data"). You grant us a limited license to host, process, and transmit Customer Data solely to operate, secure, and support the Service for you.

You are responsible for ensuring you have all rights and consents needed to route messages and secrets (including TOTP seeds) through the Service, and for the legality of the workflows you automate.

Message payloads are intended to be held only transiently under the retention settings described in our Privacy Policy. Because of this, we generally cannot recover an expired or consumed code, message, or link.

6. Intellectual Property

The Service, including its software, extraction logic, documentation, design, and the names "Sentry Relay", "Human-Fallback Safety Bridge", and related logos and marks, is owned by Sentry Relay and its licensors and protected by intellectual property laws. Except for the rights expressly granted here, no rights are transferred to you.

Subject to these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to access and use the Service and to use our SDK, CLI, and MCP packages according to their accompanying licenses. Open-source components are governed by their own licenses.

You may not use our names or marks without our prior written consent. "Sentry Relay" is not affiliated with, endorsed by, or connected to Sentry.io or Functional Software, Inc.

If you send us feedback or suggestions, you grant us a perpetual, irrevocable, royalty-free license to use them without obligation to you.

7. Plans, Payment, Billing & Refunds

The Service offers a free Sandbox plan and paid recurring subscription plans (including Builder, Growth / Pro, and Agency & Fleet, alongside optional add-on items such as additional dedicated SMS numbers and metered extraction overages). Current prices, included quotas, and feature tiers are published on our pricing page (https://sentryrelay.com/pricing) and may change prospectively as described below.

Payment Processing & Merchant of Record. All payments are processed securely through Stripe. Sentry Relay is the merchant of record for transactions on the Service, and Stripe, Inc. serves as our third-party payment processor and payment gateway. Stripe manages the secure storage and transmission of payment credentials in strict compliance with PCI-DSS Level 1 requirements. In any specific jurisdiction or transaction where Stripe Managed Payments is expressly activated at checkout, Stripe acts as reseller and merchant of record under Stripe’s applicable terms presented at purchase. Sentry Relay remains directly responsible for product delivery, technical operations, and customer support.

Subscriptions and Automatic Renewal. Paid subscription plans are billed in advance on a recurring monthly billing cycle and renew automatically at the beginning of each cycle until cancelled. By subscribing, you authorize recurring charges to your payment method on file. Add-on items (such as additional dedicated SMS numbers) are added to your monthly subscription invoice and prorated as applicable.

Cancellation and Downgrades. You may cancel your subscription or downgrade your plan at any time self-service via the Billing Portal in your Workspace Settings or by emailing support@sentryrelay.com. When you cancel, cancellation takes effect at the end of your current prepaid billing cycle; you will retain uninterrupted access to your paid features and assigned numbers until that date, and you will not be billed again.

Taxes. Stated prices exclude applicable sales tax, VAT, GST, or similar transactional taxes. Taxes are automatically calculated and collected at checkout based on your billing address and tax registration status via Stripe Tax, and are itemized on your invoices.

Usage Limits & Metered Overages. Each tier includes specified monthly quotas (including OTP extractions, webhook endpoints, and dedicated phone numbers). Where an account incurs metered overages (such as carrier SMS extraction overages beyond included plan limits), these are tracked via automated telemetry meters and billed in arrears at the rates disclosed at checkout and on our pricing page.

Failed Payments & Dunning Grace Period. If a payment attempt fails, we or Stripe will retry the charge. Your workspace enters a 7-day grace period during which you will receive payment reminder notifications. If payment is not successfully recovered by the end of the 7-day grace period, paid features will be suspended, and any dedicated carrier phone numbers will be released back to the telecom provider pool. Released phone numbers cannot be recovered, and any third-party accounts configured to use those numbers may lose verification capabilities.

Refund Policy. Because digital infrastructure, inbox routing, and carrier telephony allocations are provisioned immediately upon purchase, all subscription fees, add-on purchases, and metered usage charges are non-refundable and non-creditable, except where required by mandatory law. We do not provide prorated refunds or credits for partial billing periods, unused extraction quotas, or unallocated phone numbers. If you cancel, your access continues through the end of the prepaid period with no further charges.

Billing Inquiries & Dispute Resolution. If you believe you were charged in error or suspect unauthorized activity, you must notify us at support@sentryrelay.com within thirty (30) days of the transaction date with your workspace ID and billing details. We investigate and respond to all billing inquiries within three (3) business days. Initiating a payment dispute or chargeback with your financial institution without first contacting us may result in the immediate suspension of your workspace and release of assigned telephone numbers pending resolution.

Price Changes. We may adjust plan pricing or quota limits by providing at least thirty (30) days advance notice via email to the workspace owner and/or a notification in the developer console. Continued use of the Service after the effective date constitutes acceptance of the updated pricing. If you do not agree, you may cancel before the price change takes effect.

Free Plan. We reserve the right to modify, throttle, or discontinue the free Sandbox plan at any time. Sandbox workspaces that remain inactive for more than ninety (90) consecutive days may be pruned or deactivated to conserve infrastructure resources.

8. Phone Numbers & Messaging

Dedicated phone numbers are provisioned through third-party telecommunications carriers and are licensed to you on a monthly subscription basis solely for receiving automated verification messages. Phone numbers are not owned by you and may be reclaimed if you violate these Terms, cancel your subscription, fail to pay, or as required by carriers or telecom regulations.

Third-Party Sender Delivery. We do not guarantee that every third-party service, app, or website will accept virtual carrier numbers or successfully deliver SMS or voice calls to a particular number. Some third-party senders apply internal filtering or block VoIP/virtual numbers. Inability of an external third party to deliver messages to a provisioned number does not constitute a defect in the Service or grounds for a refund of carrier provisioning fees.

Human Fallback Voice & SMS Bridge. You must not configure Human Fallback forwarding to destination numbers without express authorization of the recipient, nor use voice forwarding in violation of telemarketing or wiretapping regulations.

9. Security

We use commercially reasonable administrative, technical, and physical safeguards, including envelope encryption of TOTP secrets, but no system is completely secure. You are responsible for securing your own systems, endpoints, and the credentials you route through the Service.

10. Third-Party Services

The Service depends on and may integrate with third-party providers (for example Stripe, Google Cloud / Firebase, Cloudflare, Telnyx, Upstash, and Resend) and with sites your agents interact with. We are not responsible for third-party services, and their availability, errors, or terms are outside our control.

11. Suspension & Termination

You may stop using the Service and close your account at any time. Cancelling a paid subscription does not by itself delete your data; delete your workspace to do so.

We may suspend or terminate your access immediately, with or without notice, if you breach these Terms, fail to pay, create risk or legal exposure for us or others, or if required by law, carriers, or payment providers. Where practical and lawful, we will give notice and an opportunity to cure.

On termination your right to use the Service ends, and dedicated phone numbers and API keys are deactivated. We will delete Customer Data according to our Privacy Policy. Sections that by their nature should survive (including intellectual property, payment obligations accrued, disclaimers, limitation of liability, indemnification, and governing law) survive termination.

12. Disclaimers

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT, TO THE MAXIMUM EXTENT PERMITTED BY LAW.

We do not warrant that the Service will be uninterrupted, error-free, or secure; that any message, code, or link will be received, extracted correctly, or delivered within any particular time (latency figures are targets, not guarantees); or that extraction will work for every sender. You are responsible for evaluating the suitability of the Service for your use, including backup and human-intervention procedures for critical workflows.

13. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, SENTRY RELAY AND ITS AFFILIATES, OFFICERS, EMPLOYEES, AND SUPPLIERS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF PROFITS, REVENUE, DATA, GOODWILL, OR BUSINESS OPPORTUNITY, ARISING OUT OF OR RELATED TO THE SERVICE OR THESE TERMS, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

OUR TOTAL AGGREGATE LIABILITY FOR ALL CLAIMS RELATING TO THE SERVICE OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) THE AMOUNTS YOU PAID FOR THE SERVICE IN THE 12 MONTHS BEFORE THE EVENT GIVING RISE TO THE CLAIM AND (B) US$100.

Some jurisdictions do not allow certain exclusions or limitations, so some of the above may not apply to you. Nothing in these Terms excludes liability that cannot be excluded under applicable law.

14. Indemnification

You will defend, indemnify, and hold harmless Sentry Relay and its affiliates, officers, and employees from any claims, damages, liabilities, and expenses (including reasonable attorneys’ fees) arising from your Customer Data, your use of the Service in violation of these Terms or applicable law, your automation of third-party accounts or services, or your infringement of any third party’s rights.

15. Governing Law & Dispute Resolution

These Terms are governed by the laws of the State of Delaware, USA, without regard to conflict-of-laws rules. The United Nations Convention on Contracts for the International Sale of Goods does not apply.

Informal resolution first. Before filing a claim, you agree to contact legal@sentryrelay.com and attempt to resolve the dispute informally for at least 30 days.

Arbitration. Except for claims for injunctive relief or relating to intellectual property, and except where prohibited by law, any dispute that is not resolved informally will be finally resolved by binding individual arbitration administered by the American Arbitration Association under its Commercial Arbitration Rules, conducted remotely or in Delaware. Judgment on the award may be entered in any court of competent jurisdiction.

Class action waiver. To the extent permitted by law, disputes will be brought only in an individual capacity and not as a plaintiff or class member in any class, consolidated, or representative action.

Courts. For any claim not subject to arbitration, you consent to the exclusive jurisdiction and venue of the state and federal courts located in Delaware.

16. Changes to These Terms

We may update these Terms from time to time. For material changes we will give at least 30 days’ notice by email to the account owner and/or a prominent notice in the console, unless the change is required by law or to address security or abuse, in which case it may take effect sooner. The "Effective date" above shows when the current version took effect.

Your continued use of the Service after changes take effect constitutes acceptance. If you do not agree, you must stop using the Service and cancel your subscription.

17. General

These Terms and the Privacy Policy are the entire agreement between you and Sentry Relay regarding the Service and supersede prior agreements. If a provision is unenforceable, the remainder stays in effect. Our failure to enforce a provision is not a waiver. You may not assign these Terms without our consent; we may assign them in connection with a merger, acquisition, or sale of assets, including to a successor legal entity. Neither party is liable for delays caused by events beyond its reasonable control. Notices to you may be sent to your account email.

18. Contact & Business Information

Sentry Relay operates in the United States. For inquiries, please reach out to the appropriate department:

• Billing & Customer Support: support@sentryrelay.com (inquiries are answered within one business day)
• Legal & Terms Inquiries: legal@sentryrelay.com
• Security & Vulnerability Reports: security@sentryrelay.com
• Website: https://sentryrelay.com