Encrypted cloud storage that keeps client data private
Consultancies like yours live and die by client trust. That’s difficult to guarantee if your cloud providers can access your files.
Protect client data with end-to-end encryption
Securely collaborate and manage access
Meet client compliance requirements
Stay protected by Swiss privacy laws
Proton is ISO 27001 certified and SOC 2 Type II verified. Standard cloud storage tools were built for collaboration — at the price of your privacy.
Providers can scan, index, and share your data with third parties. They can leak it in a data breach or use it to train AI models. But if you’re sharing sensitive files with external clients, partners, and stakeholders, your data needs a higher level of protection.
Because once files leave your organization, they become a potential liability. You can’t control where they’re downloaded, duplicated, or retained. But the responsibility of how that data is shared and stored stays with you and your business. That makes collaborating without end-to-end encryption risky.
Businesses need a way to share files without giving up visibility or control. With end-to-end encryption, files remain unreadable to anyone outside your control, even the service provider. So you can collaborate with clients without compromising their data or your reputation.
Proton Drive vs. Google Drive vs. OneDrive
See how Proton Drive for Business compares against the enterprise versions of Google Drive and OneDrive:
| |  Proton Drive |  Google Drive |  OneDrive |
|---|---|---|---|
| Default end-to-end encryption | Yes | No | No |
| No file size limits | Yes | No | No |
| Open source | Yes | No | No |
| Ad-free business model | Yes | No | No |
| Password-protected share links | Yes | No | Yes |
| Auto-expiring share links | Yes | No | Yes |
| Web, desktop, and mobile apps | Yes | Yes | Yes |
| Built-in collaborative tools | Yes | Yes | Yes |
| Privacy-first jurisdiction | Yes, Switzerland | No, US | No, US |
Proton helps consultancies protect shared data
Proton Drive applies end-to-end encryption at the file level, then pairs it with sharing and access controls designed for client-facing work. That means protection travels with each file — even after it’s shared outside your organization.
Below are some questions consultancies typically ask about protecting files they’ve shared with clients.
Yes. You can share files and folders with clients or partners using secure links or email invitations, without asking them to create a Proton Account. You stay in control of access at all times, with options to set permissions, passwords, and expiration dates — so collaboration stays simple without compromising security.
Proton Drive protects your data with end-to-end encryption, so hackers can’t read your files — even if they manage to access the infrastructure.
Share project files with clients using email invites and secure links, even if they don’t have a Proton Account. Granular access controls allow you to revoke access at any time.
Create custom folder structures for each client and allow them to securely upload documents as needed, even without a Proton Account.
Granular permission controls ensure only the right people have access, with you in control at every stage. You control who can view, edit, or share files on your team or externally.
Version history allows you to restore deleted or overwritten project files with a single click.
Use the Proton Drive desktop app to sync files and work without an active connection. Any changes you make are automatically synced when you’re back online.
Yes. Many consultancies use Proton Drive as a secure space to back up active and completed project files. End-to-end encryption ensures backups remain private, while structured folders and access controls let you limit who can view or restore files — even long after a project has ended.
Setup is easy and doesn’t require technical expertise. An intuitive dashboard keeps everything straightforward, so you can get started even without an IT team.
A privacy-first suite for your consultancy
Proton is based in Switzerland, where you benefit from a privacy-first legal framework. For consultancies, that means data sovereignty, protection from surveillance, and compatibility with European data protection requirements.
Proton Drive is part of a secure, privacy-first suite of tools designed to protect your consultancy. You don’t have to take our word for it. All our apps are fully open source and independently audited by third parties — you can trust that our security promises are kept.
Protect client data with Proton Drive
