01Agreement & who we are
These terms form a binding agreement between you (and, if you use LetSign on behalf of an organisation, that organisation) and Lean Data Pty Ltd (ABN 60 624 934 998), trading as “LetSign”. If you accept these terms for an organisation, you confirm you are authorised to bind it.
If you do not agree to these terms, do not use the service.
02Definitions
- Service — the LetSign website, application, APIs and MCP server, and related features.
- Agent — an AI assistant or automated workflow (e.g. via Claude, Codex or ChatGPT) that you connect to the Service to draft, update or track Documents.
- Document — a proposal, contract, template or other material created, sent or signed through the Service.
- Signer / Recipient — a person who receives, views or signs a Document.
- Workspace — the account environment in which you manage Documents, templates, branding and billing.
- Customer Content — the content and data you or your Agent submit to or generate within the Service.
03Eligibility & accounts
You must be at least 18 and able to form a binding contract to use the Service. You are responsible for your account, for keeping your credentials secure, and for all activity under your Workspace — including actions taken by Agents you connect. Notify us promptly of any unauthorised use.
04The service & human control
LetSign lets you and your Agents generate Documents, offer conditional pricing a Recipient selects, verify signers by email, capture legally binding e‑signatures, maintain an immutable audit trail, and collect payment via Stripe. The Service is available through the app and through a first‑class MCP server with full parity between agent‑authored and hand‑authored Documents.
Agents orchestrate; you keep the pen. Agents draft, update and track Documents — they never sign. A Document becomes binding only when a human applies their signature. You are responsible for reviewing any Document before it is sent or signed, and for its accuracy and suitability.
05Acceptable use
You agree not to use the Service to:
- break the law, infringe others’ rights, or send fraudulent, misleading, harassing or unlawful material;
- upload malware, probe or disrupt the Service, or attempt to bypass security or usage limits;
- misrepresent your identity or authority, or forge or tamper with a signature or audit trail; or
- create documents the Service is not intended for.
LetSign is for commercial agreements. The Service is not suitable for, and must not be used to create, documents that require witnessing or notarisation, or wills, deeds, powers of attorney, or other instruments with special execution formalities. You are responsible for determining whether an electronic signature is appropriate for your document and jurisdiction.
06Electronic signatures & legal validity
The Service uses electronic signatures designed to be valid and enforceable under laws such as the Australian Electronic Transactions Act, the US ESIGN Act and the EU eIDAS Regulation. By signing electronically, each party consents to transact electronically and agrees that their electronic signature has the same effect as a handwritten one.
You are responsible for ensuring that electronic signature is legally appropriate for your particular Document, parties and jurisdiction. LetSign provides tooling — email verification, timestamps and an audit trail — to evidence signing, but we do not provide legal advice and do not guarantee that any Document is enforceable in your circumstances.
07Payments & fees
Subscription & platform fees. Paid plans and any platform/processing fees are described at the point of purchase and in your billing settings. Unless stated otherwise, fees are payable in advance, are non‑refundable except as required by law, and recur until cancelled.
Payment processing. Payments and payouts are processed by Stripe and are subject to Stripe’s terms. Where you collect payment from your Recipients through the Service, you authorise us and Stripe to facilitate those payments, and you are responsible for your Stripe (including Stripe Connect) account and obligations.
Taxes. Fees are exclusive of taxes unless stated. You are responsible for any GST, VAT, sales or similar taxes applicable to your use of the Service or to amounts you collect from your customers.
08Your content & intellectual property
You own your content. As between you and us, you retain all rights in your Customer Content. You grant us a worldwide, non‑exclusive licence to host, process, transmit and display Customer Content solely to provide and improve the Service and as instructed by you (for example, delivering a Document to a Recipient).
We own the platform. The Service, including its software, design, brand and documentation, is owned by Lean Data Pty Ltd and its licensors. We grant you a limited, non‑exclusive, non‑transferable right to use the Service under these terms. You may not copy, resell, reverse‑engineer or create derivative works from the Service except as permitted by law.
You represent that you have the rights and any necessary consents to submit Customer Content and to send Documents to your Recipients.
09Third‑party services & integrations
The Service integrates with third parties — including Stripe, AI/model providers, and transcript tools such as Fathom, Granola and Fireflies. Your use of those services is governed by their own terms and privacy policies, and we are not responsible for them. Connecting an integration authorises the associated data flows described in our Privacy Policy.
10Confidentiality
Each party may receive confidential information of the other. The receiving party will use it only to perform under these terms and protect it with reasonable care, except where disclosure is required by law. We handle personal information as described in our Privacy Policy.
11Disclaimers
To the maximum extent permitted by law, and subject to section 17, the Service is provided “as is” and “as available” without warranties of any kind, whether express or implied. We do not warrant that the Service will be uninterrupted or error‑free, that AI‑generated content will be accurate or fit for your purpose, or that any Document will be legally valid or enforceable. LetSign is not a law firm and does not provide legal advice. You should obtain your own advice for your specific circumstances.
12Limitation of liability
To the maximum extent permitted by law, and subject to section 17, neither party is liable for indirect, incidental, special, consequential or punitive damages, or for loss of profits, revenue, data or goodwill. Our total aggregate liability arising out of or relating to the Service is limited to the greater of (a) the fees you paid us in the 12 months before the event giving rise to the liability, or (b) AUD $100.
13Indemnity
You agree to indemnify and hold harmless Lean Data Pty Ltd and its personnel from claims, losses and reasonable costs arising out of your Customer Content, your Documents, your use of the Service, or your breach of these terms or of applicable law, except to the extent caused by our own breach or negligence.
14Term, suspension & termination
These terms apply while you use the Service. You may stop using it and close your account at any time. We may suspend or terminate access if you breach these terms, if required to protect the Service or other users, or as otherwise permitted by law. On termination, your right to use the Service ends; provisions that by their nature should survive (including sections 8, 11–13 and 16) survive. Signed Documents and their audit trail remain retained as described in our Privacy Policy.
15Changes to the service or terms
We may update the Service and these terms from time to time. If we make material changes we will take reasonable steps to notify you and update the “Last updated” date. Continued use after changes take effect means you accept the updated terms; if you do not agree, stop using the Service.
16Governing law & disputes
These terms are governed by the laws of New South Wales, Australia. You and we submit to the non‑exclusive jurisdiction of the courts of New South Wales and the Commonwealth of Australia. Before commencing proceedings, the parties will attempt in good faith to resolve any dispute by discussion, first by contacting support@letsign.ai.
17Australian Consumer Law
Nothing in these terms excludes, restricts or modifies any guarantee, right or remedy you have under the Australian Consumer Law or any other law that cannot lawfully be excluded. Where our goods or services come with non‑excludable guarantees, and where permitted, our liability for breach of such a guarantee is limited to re‑supplying the services or paying the cost of having them re‑supplied.
18General
- Assignment. You may not assign these terms without our consent; we may assign them in connection with a merger, acquisition or sale of assets.
- Entire agreement. These terms, with any order and our Privacy Policy, are the entire agreement between us on their subject matter.
- Severability & waiver. If a provision is unenforceable, the rest remains in effect; a failure to enforce a right is not a waiver.
- Notices. We may give notices via the app or by email; you may reach us at the address below.
- Force majeure. Neither party is liable for delay or failure caused by events beyond its reasonable control.
These Terms of Service are provided for general information and are written to reflect the LetSign service. They are not legal advice. Lean Data Pty Ltd recommends reviewing them with a qualified Australian legal practitioner before relying on them.