Proton Mail built its name on privacy. With Swiss jurisdiction, zero-access encryption, and no ads. For a lot of businesses that’s exactly what they came for.
But when “the customer isn’t the product” as in a lot of free email services, it isn’t a cheap services to run, and privacy isn’t the only thing worth weighing when you’re picking business email. Proton’s own Workspace Standard plan runs around $12.99 a user a month, billed in USD, EUR or CHF rather than GBP directly. That’s a real number to budget against, and for plenty of small UK businesses the steep cost for an incremental privacy benefit might be more than they actually need.
This guide covers what to look at instead: Zoho Mail, which covers most of the same practical ground for a fraction of the price, genuine privacy-first competitors if encryption is non-negotiable, and the mainstream options if privacy was never really the deciding factor to begin with.
Zoho Mail: Most of What You Need, For Far Less
Zoho doesn’t market itself on end-to-end encryption the way Proton does, and it’s honest to say so upfront
That’s not to say it isn’t a secure, privacy first app. It is, but it doesn’t position and market itself that way. It offers everything you’d expect in a secure email workspace:
- TLS encryption in transit
- two-factor authentication
- GDPR-compliant handling
- S/MIME and PGP encryption on its paid tiers
Zoho is a solid, standard security baseline rather than Proton’s zero-access architecture.
When companies say “zero-access” it means that no one in their company, intelligence agencies, or law enforcement agencies can get access to your email content. Most popular providers like Gmail, Microsoft, Yahoo, etc. do not offer zero-access architecture, meaning your emails can be scanned and read on their servers.
Where Zoho wins decisively is price and flexibility. Mail Lite runs 80p (that’s £0.80, not a typo) a month for email alone.
Workplace Standard adds a full office suite, Writer, Sheet, Show, Calendar, Cliq, for £2.40. Proton’s equivalent full-suite tier costs roughly five times that.
Source: provider pricing pages, entry business tier, approximate GBP where not natively priced
For a small business that wants professional, custom-domain email with solid security fundamentals and doesn’t have a specific regulatory reason to require zero-access encryption, Zoho covers the actual requirement without the Proton premium.
If Encryption Is Genuinely Non-Negotiable
Some businesses aren’t at Proton by accident, they need zero-access encryption specifically, for client confidentiality, journalism, legal privilege, or a compliance framework that demands it.
If that’s you, the honest alternatives to compare are other privacy-first providers, not mainstream ones.
Tutanota (rebranded Tuta) is Proton’s closest direct competitor, German-based, end-to-end encrypted by default, generally cheaper than Proton at a similar security tier, though its calendar and collaboration tools are less developed.
Mailbox.org is another German-hosted option worth a look for the same reason. None of these compromise on the thing that likely brought you to Proton in the first place; they’re simply other vendors selling the same category of product.
Fastmail: If Privacy Was Never the Main Driver
Worth being honest with yourself here. If what actually attracted you to Proton was a clean, ad-free, professional inbox rather than the encryption architecture specifically, Fastmail does that job without the privacy-vendor premium.
It costs around £4 a month for 5 mailboxes (so about £0.80 per mailbox), has no ads, no data mining, but standard rather than zero-access encryption. It’s a fair swap if, on reflection, “not Google or Microsoft” was the real requirement rather than “provably unreadable by the provider.”
Google Workspace and Microsoft 365: The Mainstream Route
| Provider | Entry price /user/month | Encryption | Best for |
|---|---|---|---|
| Zoho Mail | £0.80 | TLS, S/MIME, PGP (paid tiers) | Best value, solid security baseline |
| Tutanota (Tuta) | ~£3 | Zero-access, end-to-end | Cheaper Proton-equivalent security |
| Fastmail | ~£5 | Standard (TLS) | Clean, independent inbox, no suite |
| Google Workspace / Microsoft 365 | £5.90 / £10.80 | Standard (TLS) | Deepest integrations, mature suite |
Source: provider pricing pages, approximate GBP where not natively priced
If your business is leaving Proton because the ecosystem felt too narrow, thin integrations, less mature collaboration tools, rather than because of price or privacy specifically, Google Workspace and Microsoft 365 are the obvious mainstream alternatives, at £5.90 and £10.80 a month respectively for their entry full-suite tiers.
Both trade Proton’s zero-access architecture privacy positioning for deeper third-party integrations and more mature real-time collaboration, a fair trade for a business whose priorities have shifted since it first chose Proton.
The Honest Recommendation
If Proton feels like more than your business needs, and for most small UK businesses without a specific regulatory driver, it is, Zoho Mail covers the practical requirement, custom domain, reliable delivery, solid standard security, at a fraction of the cost, with a genuine office suite upgrade path if you need one later. Keep Proton, or move to Tutanota, only if zero-access encryption is a real requirement for your business, not a feature that sounded reassuring at sign-up.
Our Zoho Mail setup service handles the switch properly, migration, DNS records, distribution groups, so moving off Proton doesn’t mean a fortnight of troubleshooting. If Google Workspace is also on your list, our Google Workspace vs Zoho Mail comparison covers that decision in full.
Common Questions
Is there a cheaper alternative to Proton Mail for business?
Zoho Mail, and considerably so. £3 (including VAT) a month against Proton’s roughly $12.99 for the comparable full-suite tier, with a solid standard security baseline rather than zero-access encryption.
What’s the best alternative to Proton Mail that isn’t as expensive?
Depends what you actually need. Zoho if standard security is enough, Tutanota if you need Proton-equivalent zero-access encryption at a lower price than Proton itself.
Does Zoho Mail offer encryption like Proton?
Not the same architecture. Zoho supports TLS in transit plus S/MIME and PGP on paid tiers, a solid standard, but not Proton’s zero-access, provider-can’t-read-it model. If that specific guarantee matters for compliance reasons, Zoho isn’t a direct swap and neither are other mainstream providers like Google and Microsoft.
Is Tutanota better than Proton Mail?
Not better exactly, but genuinely comparable on the security architecture that matters most to Proton’s core audience, usually at a lower price, with a less developed calendar and collaboration layer in exchange.