Compare -> ReefOffice vs Proton Workspace: which should you choose?
ReefOffice vs Proton Workspace: which should you choose?
Proton is excellent. It is the gold standard for end-to-end encrypted email and collaboration: Swiss-based, open-source, audited, and used by millions. If you are comparing ReefOffice and Proton Workspace, you already care about privacy and getting off Big Tech. So do we. The real question is what kind of product you need.
Proton encrypts your email and files on their servers.
ReefOffice runs files, CRM, invoicing, document management and automation on an EU VM reserved for your organisation.
Last reviewed: August 2026
Your reserved environment, not a shared app tenant
Proton encrypts your data on Proton servers. ReefOffice assigns each client a reserved EU VM, with full export and an open-source stack you can take and self-host.
It runs your business, not just your inbox
Proton secures communication. ReefOffice runs the business: CRM, invoicing, OCR document filing, and automation. Those are not Proton Workspace features.
AI that never leaves the box
On the Dedicated tier, the model runs on isolated GPU hardware managed for your workspace. On Office plans, you can connect a supported provider API key.
An AI agent that does the busywork
Hermes can draft an invoice, file a document, search your data, and run approved automations. Lumo answers questions; it does not act on your business apps.
One flat price for the whole team
Proton charges per user. ReefOffice Team is EUR119/mo flat for up to 10 named users and includes the business apps Proton lacks.
Side by side
| What matters | ReefOffice | Proton Workspace |
|---|---|---|
| Where your data lives | ✓ An EU VM reserved for your organisation | ~ Encrypted on Proton's cloud |
| CRM, invoicing and accounting | ✓ Included (Dolibarr) | ✗ Not offered |
| Document management + OCR | ✓ Included (Paperless-ngx) | ✗ Drive only, no OCR/filing |
| Workflow automation | ✓ Included (ReefCoral) | ✗ |
| Private AI chat | ✓ Bring your own API key or add Managed AI; Dedicated AI requires a design review | ~ Lumo, zero-access, but on their cloud |
| AI agent that does the work | ~ Hermes with governed actions; advanced modes are phased | ✗ Lumo is chat, not an agent |
| End-to-end zero-access encryption | ~ Vault zero-access; disk at rest; air-gap option | ✓ Yes, their core strength |
| Mail, Calendar, Drive, Docs, Meet, VPN, Pass | ~ Files/Docs/Calendar via Nextcloud; bring your own mail | ✓ All first-party |
| Pricing | ✓ Flat rate, up to 10 named users (Team EUR119/mo) | ✗ EUR12.99-19.99 per user / month |
| Lock-in | ✓ Open-source, full export, self-host anytime | ✗ Proprietary apps and formats |
| EU-based, outside US CLOUD Act | ✓ | ✓ |
When Proton is the better choice
We would rather you pick the right tool than the wrong one. Choose Proton if:
- →You only need secure email, calendar and a password manager, and do not want a server or business apps.
- →True end-to-end, zero-access encryption is your top requirement. Proton has the stronger cryptographic guarantee for its mail/drive/calendar model.
- →You want a single polished SaaS vendor with mature mobile apps, VPN, and a long public track record.
Why trust ReefOffice
Open-source stack
Nextcloud, Dolibarr, Paperless-ngx and ReefCoral are open-source. Nothing proprietary to trap you.
Take your data and leave
Full export, anytime. You can self-host the same stack, a guarantee multi-tenant SaaS structurally cannot make.
EU-based and GDPR by default
Your server lives in the EU, outside US CLOUD Act hosting. GDPR is the default, not an add-on.
Honest by design
We tell you when a competitor is the better choice. No dark patterns, no lock-in.
Frequently asked questions
Is ReefOffice more expensive than Proton Workspace? +
For a solo who only needs email and docs, Proton can be cheaper. ReefOffice Team is EUR119/mo flat for up to 10 named users and includes CRM, invoicing, document management and automation that Proton does not offer.
Is ReefOffice as secure as Proton? +
Different model, different guarantee. Proton has true end-to-end zero-access encryption for mail/drive/calendar. ReefOffice provides a reserved encrypted VM, a zero-access password vault, air-gap options, and business apps that need server-side access to work.
Does ReefOffice include an AI agent, or just chat? +
ReefOffice includes Open WebUI and Hermes. You can use your own compatible API key or add Managed AI as a separate subscription. Dedicated AI requires a design review. Hermes actions are governed and advanced modes are introduced progressively.
Can I keep using Proton Mail and still use ReefOffice? +
Yes. Many clients keep their existing email provider and run CRM, invoicing, documents, files, automation and private AI on ReefOffice.
What happens to my data if I want to leave ReefOffice? +
You export everything and can self-host the same open-source stack. There is no proprietary format to escape.
Do I need to be technical to run ReefOffice? +
No. ReefOffice is fully managed: no terminal, no server administration.
Where does ReefOffice run its AI? +
Managed EU AI uses approved European routes; Dedicated uses isolated GPU hardware managed for your workspace. Office plans can connect a supported provider API key. Local indexing keeps the full document corpus on your server.
Run your back office in a reserved EU environment
CRM, invoicing, documents, files and automation, managed for you on a reserved EU VM. Your existing email provider stays connected.
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