Proton Mail or Tuta for your business? We compare them to your own domain
What Proton Mail and Tuta really do well
Let's start honestly: Proton Mail (Switzerland) and Tuta (Germany) have earned their reputation. Both are built around end-to-end encryption between users of their own service, sit outside the reach of the US CLOUD Act, and offer a free entry tier to get started with. For anyone whose main goal is shielding their personal correspondence, they're a solid recommendation. We're not saying this to politely dismiss the competition; we use privacy-conscious tools ourselves too.
Where it gets tricky once it becomes a business
The problem isn't that these services are bad, it's that a business mailbox asks for different things. First: end-to-end encryption only works to its full potential between two users of the same or a compatible service. The bulk of your business mail goes to customers, suppliers and government bodies who don't have a Proton or Tuta account. That's where most of the privacy advantage already falls away, and in practice you end up communicating the same way you would with any other provider.
Second: once you work with a team, you want shared mailboxes, aliases, central account management and compatibility with the mail client your colleagues are already used to, whether that's Outlook, Apple Mail, or a familiar webmail. Some privacy-focused providers work with their own apps and limited standard IMAP access, which becomes awkward once your team already has a fixed way of working. And the features that do make it possible are usually reserved for pricier business plans. So always check the current terms for your situation, since these things do change.
What your own domain still gives you
With a mailbox on your own domain (naam@jouwbedrijf.be), your identity isn't tied to a single ecosystem. You choose the mail client or webmail that suits your team, you manage aliases and shared mailboxes however you're used to, and you can switch providers without hassle without losing your address. That's exactly why hosting on your own domain remains such a lasting value for businesses: not because it's necessarily more privacy-friendly than Proton or Tuta, but because it fits better with how a team actually works.
And at Mailflux
We're not an end-to-end encrypted service either, and we'd rather say that plainly than gloss over it. What you do get: a mailbox on your own domain, hosted in Europe and GDPR-compliant, with encrypted connections (TLS), optional 2FA, and ML-driven antispam, antivirus and antimalware filtering on every plan. Working with a team, you manage accounts and aliases centrally through bulk account management, without giving up the mail client or webmail you're used to.
Looking for maximum encryption specifically for your most sensitive messages? Read encrypted email: what it is and when you need it for the best approach: sometimes that means combining both worlds.
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A privacy mailbox for yourself and a business mailbox for your team aren't opposites; they simply solve a different problem. Want a mailbox on your own domain that grows with your team? Request your mailbox with no obligation.
FAQ
Frequently asked questions
Is Proton Mail GDPR-proof enough for my business?
Proton Mail is a Swiss service with a strong privacy reputation, but GDPR compliance depends on more than just the provider: think of your data processing agreement and how you handle data yourself. This article is general explanation, not legal advice; consult a specialist if in doubt.
Can I use Proton Mail or Tuta with my own business domain?
Both offer that on their paid business plans. The question isn't so much whether it's possible, but whether the team and integration options match how your business already works. That varies by situation and sometimes changes with new plans, so always check the current terms.