Subnoto is a French-built e-signature SaaS positioned around “confidential and sovereign e-signatures.” It is designed for everyday business contracts, HR documents, NDAs, quotes, real estate mandates, and embedded signing in SaaS products. Its main emphasis is that documents remain confidential throughout the signing and processing workflow, with the platform operator, third parties, and even governments unable to access the data.
Subnoto covers the full signing workflow: uploading PDF/Word files, placing signature and input fields, inviting signers by email, setting signing order, adding approvers, configuring deadlines and reminders, tracking real-time status, using a Kanban board, and downloading signed documents with audit certificates. For teams, it offers workspaces, role-based permissions, SSO, activity logs, brand customization, and controls over attachments in completion emails. Security is its clearest selling point: it uses confidential computing, TEE, secure enclaves, encrypted attestations, and tamper-proof audit trails. Data is encrypted at rest and hosted in France.
Subnoto is relatively developer-friendly, offering a REST API, OpenAPI 3.1, API keys, Sandbox, Webhooks, embedded signing iframe tokens, an MCP Server, and TypeScript/JavaScript, Python, and PHP SDKs. Third-party integrations include Google Drive, Google Workspace, Okta, Microsoft Entra, Zapier, n8n, Raycast, and more. Its pricing page shows a permanent free plan as well as plans for individuals, small organizations, and enterprise teams. Monthly plans include usage quotas, and additional credits do not expire, but the scraped text did not provide specific prices.
Subnoto’s strengths are its strong privacy and compliance narrative, good interface feedback, the ability to start for free without a credit card, and a complete API offering. Its limitations are that the default signature type is currently eIDAS simple electronic signature, while AES/QES support is still planned for the future; pricing details are not transparent; and there is no information about China-specific compliance, payment options, or accessibility. It is better suited to French and EU businesses, small and mid-sized teams that care about data sovereignty, non-profits, legal/HR use cases, and SaaS teams that need to embed e-signatures into their own products.
The official website does not provide information about access from mainland China, RMB payments, or localized compliance, so availability in China is unknown. If the contracting parties and data are mainly in China, it is worth also evaluating local services such as e签宝, 法大大, 上上签, and 契约锁. If recognition by European and US clients and EU-based privacy hosting are required, compare it with DocuSign, Yousign, Adobe Sign, PandaDoc, and Dropbox Sign.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on subnoto.com official site.
subnoto.com is an France SaaS Tools provider. TG4G tracks its product information, an overall rating of 8.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach subnoto.com directly.