Tresorit — Independent Software Review

End-to-End Encrypted Cloud Storage for Businesses

Compliance Transparency Index

Grade: A — Score: 90/100

Best For

• Organizations in regulated industries (finance, legal, healthcare, automotive) that need end-to-end encrypted cloud storage with data residency controls to meet GDPR, NIS2, DORA, or TISAX requirements.
• Security-conscious teams that require zero-knowledge architecture where even the cloud provider cannot access stored data. Tresorit is one of the few platforms where encryption keys never leave the client device.
• Law firms, consultants, and financial advisors who need secure data rooms for client collaboration, document exchange, and digital signatures with full audit trails.
• European businesses that want a Swiss-owned platform (Swiss Post subsidiary) with EU data residency options, avoiding US-headquartered cloud providers subject to the CLOUD Act.

Not Ideal For

• Teams that need real-time collaborative document editing like Google Docs or Microsoft 365. Tresorit's zero-knowledge encryption makes real-time co-authoring architecturally difficult. Document editing is currently a free promotional add-on in Engage, not a core feature.
• Budget-conscious small teams. At €16/user/month (Business, yearly) for a minimum of 3 users, the entry cost is €48/month before adding any seats. Dropbox Business starts lower for basic cloud storage without end-to-end encryption.
• Organizations that need deep integrations beyond Microsoft and Google. Tresorit's integration ecosystem is limited to Outlook, Gmail, Azure AD, Okta, Active Directory, and Microsoft Sentinel. There is no Slack, Salesforce, or broader SaaS integration library.

Operational Overview

Pricing Structure

Professional: €23.99/month (billed yearly) or €29.99/month (billed monthly)

• For 1 user
• 4 TB encrypted storage
• 10 GB maximum file size
• 16 eSignatures free
• Encrypted file sharing and requests
• Cooperative Link
• Version history
• Sync across devices
• Audit logs
• Custom branding

Business: €16/user/month (billed yearly) or €20/user/month (billed monthly)

• At least 3 users
• From 6 TB encrypted storage
• 15 GB maximum file size
• 16 eSignatures free
• Everything in Professional, plus:
• Data residency options
• Mark files as editing
• Custom admin policies
• Single Sign-On
• Inclusion link security settings
• Subscription Co-Admin
• Domain verification

Business Pro: €20/user/month (billed yearly) or €25/user/month (billed monthly)

• At least 5 users
• From 15 TB encrypted storage
• 20 GB maximum file size
• 16 eSignatures free
• Everything in Business, plus:
• User-level data residency options
• Dynamic watermarks
• Advanced link tracking and document analytics
• Auto-deletion policy
• Subscription Co-Owner
• Custom domain
• AzureAD and Okta provisioning
• Active Directory
• Bring Your Own Key (Azure)
• SIEM (Sentinel)

Alternative Consideration

Consider switching to Dropbox: Dropbox offers broader integration options but lacks the same level of end-to-end encryption.

Frequently Asked Questions

How does Tresorit's zero-knowledge encryption work?

Tresorit encrypts files on your device using AES-256 before they are uploaded. Encryption keys are generated and stored on the client, never on Tresorit's servers. This zero-knowledge architecture means Tresorit cannot read, scan, or access your data at any point. Even if Tresorit's servers were breached, attackers would only find encrypted data with no way to decrypt it.

Who owns Tresorit and where is data stored?

Tresorit is a subsidiary of Swiss Post Digital, which is part of the Swiss government-owned Swiss Post. The company was originally founded in Budapest, Hungary in 2011 and later relocated its legal entity to Switzerland. Business and Business Pro plans offer data residency options, letting you choose where your encrypted data is physically stored. Business Pro adds user-level residency, allowing different team members to use different regions.

How does Tresorit compare to Dropbox or Google Drive?

The key difference is encryption architecture. Dropbox and Google Drive use server-side encryption, meaning the provider holds the keys and can technically access your files. Tresorit uses client-side end-to-end encryption with a zero-knowledge model. The trade-off is that Tresorit does not support real-time collaborative editing the way Google Docs or Dropbox Paper do. Tresorit's Business plan starts at €16/user/month (yearly), which is higher than Dropbox Business but includes SSO, data residency, and admin policies.

What compliance frameworks does Tresorit support?

Tresorit publishes dedicated compliance pages for GDPR, HIPAA, NIS2, DORA, TISAX, CCPA, CJIS, FINRA, and ITAR. All plans are GDPR compliant. HIPAA support is available for healthcare organizations. TISAX compliance is relevant for automotive supply chains. NIS2 and DORA address EU cybersecurity and financial sector requirements. Tresorit does not hold its own SOC 2 certification, though its infrastructure runs on SOC 2 Type 2 certified cloud providers.

Does Tresorit offer Single Sign-On?

Yes, SSO is available on the Business plan (€16/user/month billed yearly) and above. Business Pro (€20/user/month billed yearly) adds AzureAD and Okta provisioning, Active Directory integration, and Bring Your Own Key via Azure. The Professional plan (€23.99/month for 1 user) does not include SSO.

What is Tresorit Engage?

Tresorit Engage is a secure data room product built on the SecureCloud platform. You create encrypted, individually branded rooms for client collaboration, document exchange, and project management. Each room includes task management, auditable activity logs, real-time notifications, and document analytics. Engage Professional starts at €58.99/month (billed yearly) for 1 Room Manager and 5 Contributors. Engage Business at €153/month (billed yearly) supports 3 Room Managers and 15 Contributors.

Can Tresorit integrate with Microsoft and Google email?

Yes. Tresorit offers free plugins for Outlook and Gmail that enable encrypted email attachments. The Tresorit EmailEncryption add-on extends this further with policy-based encryption controls. On the identity side, Business Pro integrates with Azure AD for user provisioning and Microsoft Sentinel for SIEM security monitoring. There is also a Tresorit with Microsoft integration for broader Microsoft 365 workflows.

Is there a free version of Tresorit?

Yes. Tresorit offers a Basic plan with limited features at no cost. All paid plans include a 14-day free trial without limitations. Tresorit Send is a separate free tool for sending encrypted files without a subscription. Personal plans start at €3.99/month (billed yearly) for 50 GB of encrypted storage, and business plans start at €16/user/month (billed yearly) for teams of 3 or more.