“Encrypted email” means two very different things depending on which vendor you ask. Proton Mail and Tuta (formerly Tutanota) replace your email service outright, giving every user a new inbox where messages are end-to-end encrypted by default. Virtru takes the opposite approach: it layers encryption on top of the Gmail or Outlook inbox you already run, as a browser extension or add-in, so nobody has to migrate anything. Both approaches are legitimate for business use in 2026 — they just solve different problems, and picking the wrong one means either a painful migration you didn’t need or a false sense of security from a tool that isn’t actually protecting your existing mail flow.
At a Glance
| Tool | Model | Entry Business Price | Best For |
|---|---|---|---|
| Proton Mail (Business) | Standalone encrypted mail service | $12.99/user/month (Workspace Standard, billed yearly) | Teams willing to switch their primary inbox |
| Tuta (Tutanota) | Standalone encrypted mail service | €6/user/month (Essential, billed yearly) | Freelancers and EU-based teams wanting data sovereignty |
| Virtru | Encryption layered onto Gmail/Outlook | $119/month for 5 users (Starter, billed annually) | Organizations that must keep using Gmail/Microsoft 365 but need compliance-grade encryption |
The Short Verdict
If you can move your whole team’s inbox, Proton Mail’s Workspace plans buy you end-to-end encrypted mail, calendar, drive, and VPN under one roof starting at $12.99 per user per month, with HIPAA and GDPR support built in. Tuta undercuts Proton on price (business plans start around €6/user/month) and stores everything in German, ISO 27001-certified data centers, but it’s a smaller company with a smaller ecosystem around it. If migrating off Gmail or Microsoft 365 is a non-starter — which it is for most mid-size and large organizations — Virtru is the more realistic choice: it bolts message- and file-level encryption onto the inbox people already use, starting at $119/month for five users, and it’s the only one of the three with published compliance tiers reaching CMMC, FedRAMP, and ITAR.
What It Is: Two Different Architectures
Proton Mail is a Swiss-based, standalone email provider built around end-to-end and zero-access encryption — Proton’s own servers can’t read stored mail content because the decryption keys live with the user. Messages between two Proton Mail users are encrypted automatically; sending encrypted mail to someone on Gmail or Outlook requires either a password-protected message link or the recipient getting their own Proton-compatible setup. Proton’s business pricing, per its own plans page, now centers on Workspace Standard at $12.99/user/month (billed yearly at $155.88, a 13% discount off the $14.99 monthly list price) and Workspace Premium at $19.99/user/month ($239.88/year, 20% off $24.99). Standard includes 1 TB of mail storage per user, up to 15 custom email domains, 20 addresses per user, GDPR and HIPAA compliance support, and compatibility with Outlook, Thunderbird, and Apple Mail via Proton’s bridge. Premium adds 3 TB of storage, 20 domains, and data-retention policy controls. An Enterprise tier is custom-quoted.
Tuta takes the same standalone-service approach but is based in Germany and markets itself hard on data sovereignty and post-quantum-ready encryption. According to Tuta’s own published business pricing, the three tiers are Essential at €6/user/month (50 GB storage, 3 custom domains, aimed at freelancers), Advanced at €8/user/month (500 GB, 10 domains, aimed at teams and SMEs), and Unlimited at €12/user/month (1,000 GB, unlimited custom domains, aimed at large businesses, and the only tier with email import). Tuta encrypts the subject line, body, attachments, calendar, and contacts end-to-end, says it’s moving toward quantum-safe encryption, stores data in ISO 27001-certified German data centers, and publishes a 99.95% uptime SLA along with a standard GDPR data processing agreement.
Virtru doesn’t replace your email provider at all. It’s an add-on for Gmail and Microsoft 365/Outlook that encrypts individual messages and attachments using the Trusted Data Format (TDF), an open standard Virtru co-created, and lets senders set expiration dates or revoke access after the fact — without forcing recipients to create a new account or use a separate inbox. Per Virtru’s own pricing page, Starter costs $119/month for 5 users (about $24/user/month) billed annually, and includes encrypted email and attachments, Microsoft 365/Google Workspace support, access revocation, and a Business Associate Agreement for HIPAA obligations. Business, at $219/month for 5 users, adds encrypted file sharing, custom branding, Google Vault integration, and support for CCPA, CJIS, EAR, GDPR, and FERPA on top of HIPAA. A Compliance tier at $499/month for 5 users adds CMMC, DFARS 7012, and ITAR support, a FedRAMP ATO at the Moderate level, FIPS 140-3 validated encryption, and PCI DSS-compliant infrastructure — clearly aimed at government contractors and regulated industries. Enterprise is custom-quoted for organizations over 50 employees.
Pricing and Feature Comparison
| Feature | Proton Mail (Workspace) | Tuta Business | Virtru |
|---|---|---|---|
| Deployment model | Replaces your email provider | Replaces your email provider | Add-on inside Gmail/Outlook |
| Entry price | $12.99/user/month | €6/user/month | $119/mo for 5 users (~$24/user) |
| Top published tier | $19.99/user/month (Premium) | €12/user/month (Unlimited) | $499/mo for 5 users (Compliance) |
| Storage (entry tier) | 1 TB/user | 50 GB/user | Not storage-based |
| HIPAA support | Yes, all business tiers | Not explicitly marketed | Yes, with signed BAA from Starter up |
| Government-grade (CMMC/FedRAMP/ITAR) | No | No | Yes, Compliance tier |
| Keeps existing Gmail/Outlook address | No — new inbox | No — new inbox | Yes |
Pros
- Proton Mail: Mature product bundled with VPN, Drive, and Pass; strong brand trust; HIPAA and GDPR support on every business tier.
- Tuta: Lowest published entry price of the three, EU-based data residency, and a security-first roadmap (quantum-safe encryption).
- Virtru: No migration — works inside the inbox employees already use; the only option with published CMMC/FedRAMP/ITAR tiers for regulated industries.
Cons
- Proton Mail: Encrypting mail to non-Proton recipients still requires a password-protected link workflow, which can confuse external contacts.
- Tuta: Smaller ecosystem and support footprint than Proton; less third-party integration documentation available in English-language materials.
- Virtru: Doesn’t encrypt an entire mailbox or provider by default — protection is per-message/per-file, so it depends on consistent user behavior (or admin-enforced policies) to be effective everywhere.
Who It’s a Good Fit For
Choose Proton Mail if you’re a small-to-mid-size business willing to migrate to a privacy-first email provider and want encrypted mail, calendar, and storage bundled together. Choose Tuta if budget and EU data residency matter more than ecosystem maturity. Choose Virtru if you’re already committed to Google Workspace or Microsoft 365 — which describes most mid-size and large organizations — and need to add verifiable, auditable encryption and compliance controls (HIPAA, CMMC, FedRAMP) without touching your existing email infrastructure.
Who Should Look Elsewhere
If your organization is legally or contractually locked into Microsoft 365 or Google Workspace, Proton Mail and Tuta aren’t realistic options no matter how good their encryption is — you’d be running a second, parallel inbox. Conversely, if you want every single message automatically end-to-end encrypted with zero reliance on user behavior, Virtru’s per-message model is a weaker fit than Proton’s or Tuta’s default-on encryption.
Bottom Line
There’s no single “best” encrypted email provider for business in 2026 — there’s a best architecture for your situation. Proton Mail and Tuta are the right call when you can move your whole organization’s email and want encryption on by default; Proton costs more but has the broader ecosystem, while Tuta is cheaper and more EU-centric. Virtru is the right call when migration is off the table and you need audited, compliance-grade encryption layered onto the Gmail or Outlook inbox your company already runs.
FAQ
Can I use Proton Mail or Tuta without giving up my Gmail or Outlook address?
Not fully. Both are standalone mail services with their own addresses; you can forward or alias mail, but the end-to-end encryption benefit applies to mail sent and received through their systems, not your existing Gmail/Outlook account.
Does Virtru actually encrypt data, or is it just access control?
It encrypts the message or file content itself using the Trusted Data Format, then layers access policies (expiration, revocation) on top — so it’s encryption plus policy control, not policy control alone.
Which of these is HIPAA-compliant out of the box?
Proton’s business plans and Virtru’s plans (from Starter up, with a signed Business Associate Agreement) both publish HIPAA support. Tuta’s marketing doesn’t prominently cite HIPAA, so healthcare organizations should confirm directly with Tuta before relying on it for PHI.
Is Tuta’s business pricing in euros a problem for US buyers?
No — it just means your invoice is denominated in euros and your USD cost will move with the exchange rate; Tuta bills in euros regardless of customer location.
Do any of these work for government contractors specifically?
Virtru is the only one of the three with a published tier (Compliance, $499/month for 5 users) explicitly built around CMMC, DFARS 7012, ITAR, and a FedRAMP Moderate ATO.
Sources
- Proton — Business plans and pricing
- Proton Mail — Pricing
- Tuta — Business plans
- Tuta — Choosing the best email plan for your organisation
- Virtru — Pricing