A privacy-first business stack is not one subscription. It is a set of boundaries.
Decide who controls the domain, identity, mail, files, passwords, network access and recovery. Then choose vendors.
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Visit Proton official siteThree workable models
Proton-centred suite
Mail, calendar, files, documents, VPN and passwords under one privacy-first provider. Lower integration burden; higher suite dependency.
Best-of-breed stack
Fastmail for email, separate password manager, files, DNS and VPN. More control; more administration.
Hardened mainstream suite
Google or Microsoft with strict identity, sharing, retention and device controls. Less privacy purity; often stronger workflow continuity.
The principle
Consolidate where it reduces human error. Separate where it preserves ownership, recovery or exit. Complexity is not a security control.
| Boundary | What good looks like |
|---|---|
| Domain | Organisation-controlled registrar, MFA and documented recovery. |
| DNS | Exportable records, controlled access and change history. |
| Identity | Named accounts, MFA, offboarding and recovery codes. |
| Custom domain, authenticated sending and tested migration. | |
| Passwords | Business vaults, emergency access and offboarding. |
| Files | Ownership, sharing rules, backup and export. |
Last reviewed 19 July 2026. Verify current plans, limits and migration terms directly with the provider.
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