Accelerate agreements with confidential e-signatures

Privacy-friendly e-signatures made in France. Secure, seamless document journeys to speed agreements and win client trust.

Step 1: Upload securely

Confidential computing ensures your documents remain private throughout the agreement lifecycle--even while in use, and even from us.

Step 2: Prepare your documents

Select recipients and place signature fields in seconds with a simple, intuitive document wizard.

Step 3: Collect signatures

Passwordless login and automated reminders help complete agreements faster than ever.

Streamline your signature process

Our intuitive interface, automated reminders, and robust API capabilities are all designed to help you complete agreements faster.

All-in-one document editor

Place signatures and text fields with ease. Upload, manage, and customize documents in one place--no need for complicated onboarding or switching between tools.

Frictionless login

A totally passwordless experience means less time wasted on forgotten passwords or account resets.

Intuitive signing & management

Send and sign documents in minutes. Documents signed or in progress are securely stored in your personal space. You can browse and search them whenever you need.

Designed with European compliance in mind

Electronic signatures tailor-made for most agreements and contracts and legally valid in Europe. eIDAS advanced and qualified electronic signatures planned for 2025.

Integrates with the tools you already use

No-code integrations mean you can directly import or export your documents into the apps you already use and build signature automation into your workflows.

End-to-end privacy, future-proof security

Security is the DNA of Subnoto. We deliver top-grade security with confidential computing and advanced cryptographic methods so you can focus on completing agreements faster.

Truly private e-signatures

Use of trusted execution environments (TEEs) means privacy from unauthorized parties--even during processing, and even from Subnoto.

Tamper-proof signing record

Enclaved audit trails of document activity ensure continuous, immutable access records for seamless compliance.

Post-quantum cryptography

Quantum computing advancements mean that current encryption algorithms will cease to be effective. Subnoto layers quantum-resistant encryption algorithms on top of standard encryption methods to keep your documents and signing activity secure—even in a post-quantum future.

Hosted in France 🇫🇷

Your data is securely stored in encrypted form and processed within secure enclaves on our own servers, ensuring maximum privacy and compliance with European standards.

Q&A

We answer most frequently asked questions.

What is confidential computing?

Confidential computing is all about keeping your sensitive data safe, no matter where or when it's being used. Data can exist in three states: at rest, in transit, and in use. While most security measures focus on protecting data when it's stored or sent, confidential computing takes it a step further by securing your information even when it's actively being processed. Thanks to secure enclaves-think of them as ultra-secure vaults-Subnoto makes sure your data remains private, protected, and only accessible to you, no matter what.

What’s wrong with existing e-signature solutions?

Many e-signature and contract management tools look simple on the surface but often fall short when it comes to security or speed. They store sensitive data on external servers, introducing potential risks, or rely on outdated workflows that slow you down.

Subnoto changes the game by applying confidential computing to secure every step of the contract lifecycle and designing modern signature workflows built for speed.

Why is Subnoto the first passwordless e-signature platform?

Passwords are not only a pain to remember but also insecure: they can be phished or stolen from servers. Subnoto is the first e-signature solution to embrace passwordless login methods such as passkeys and magic links for a password-free experience that’s not only more secure but also more seamless.

How does Subnoto ensure better compliance and transparency?

We believe compliance doesn't have to be complicated. Subnoto makes it easy to stay compliant with automatic audit logs, secure user permissions, and real-time contract tracking. Thanks to confidential computing, sensitive information is only accessible to the right people-and only when it should be. No more digging through endless folders or wondering if you've met regulatory requirements. With Subnoto, you get a clear, transparent process that makes internal audits and external reporting feel effortless.

Why should I choose Subnoto?

At Subnoto, we’re not just offering another e-signature tool—we’re rethinking the entire contract experience to make it smarter, safer, and faster.

Security without compromise: With confidential computing powering our platform, your data is secure at every stage—even while it’s being processed. Your access to Subnoto is also secure and phishing-resistant thanks to passwordless login methods like passkeys.
Faster, Frictionless Workflows: Our streamlined approach removes unnecessary steps so your contracts move at the speed of your business.
Full transparency: Stay in control with real-time updates, automatic compliance checks, and easy-to-read audit trails.

Subnoto isn’t just about signing faster—it’s about working smarter, building trust, and staying ahead. Take your contract management to the next level.

How can I contact Subnoto?

We’re here to support you, whether you’re just getting started or need expert advice.

Send us a message at [email protected] and we’ll get back to you quickly.