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Business Email & Office Suites

Tuta Business

EU-Made Report an error

Panel rating · 6 judges · How to read the stars

Category median

Sovereignty: not determined

0–5 in half steps. 5 means the rubric's top anchor is met on the evidence.

by Tutao GmbH · tuta.com

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Tuta Business: AI-assisted analysis on whats-best.ai Tuta Business: AI-assisted analysis on whats-best.ai (dark)

Add ?theme=dark to the image address for dark backgrounds. The badge shows the category and the month of the latest evaluation, and EU-Made where that is the product’s provenance. It never shows a score.

Tuta Business at a glance

Vendor
Tutao GmbH
Headquarters
Not stated on the vendor’s pages as of 5 Nov 2026
Data hosting
Default not stated; pages mention Germany source, captured 5 Nov 2026
Free plan
Yes, per the vendor’s own page source, captured 5 Nov 2026
Panel verdict
The AI panel rates Tuta Business 3/5, the mean of 6 judges. Tuta Business from Tutao GmbH of Hanover is an end-to-end encrypted mail, calendar and file bundle on custom domains, with three public business tiers at €6, €8 and €12 per user per month paid yearly, each marked "Excludes taxes". how scores are made
As of
Vendor pages captured 5 Nov 2026; evaluated by the panel 5 Nov 2026. all sources

Tuta Business alternatives, European ones first →

Read this page as one judge. Each weighs the same scores by what they care about.

The IT Service Provider

Weighted verdict

Runs a six-person IT service company in Austria that looks after mail for forty client firms, from a two-person architect's office to a hotel group. Spends Mondays on mails that landed in spam and phones that stopped syncing. Wants one partner console for every client, DKIM and DMARC set up without a ticket, migrations it can run itself, support that answers within the hour, and margins it can calculate before it quotes.

Same scores as the panel view — this lens weights them the way this judge cares.

Scored by The IT Service Provider

Panel median The IT Service Provider This judge’s scores over the panel median. Each label opens its reasoning below.
Scores per criterion, in stars out of 5
Criterion Panel median The IT Service Provider
Mail, domains & deliverability 2.5 of 5 2.5 of 5
Calendar, contacts & office apps 2 of 5 2 of 5
Security, encryption & compliance archiving 3.5 of 5 3.5 of 5
Administration, identity & partner management 2 of 5 2 of 5
Migration, open standards & exit 2 of 5 2 of 5
European sovereignty 4 of 5 4 of 5
Pricing transparency 3.5 of 5 3 of 5

Mail, domains & deliverability

How this is scored

How well the mailbox itself works: custom domains and their DNS set-up, aliases, catch-all, shared and functional mailboxes, distribution lists, mailbox and attachment size limits, IMAP, POP3, SMTP and Exchange ActiveSync or MAPI for Outlook, web and mobile apps, spam and malware filtering, SPF, DKIM, DMARC and MTA-STS, out-of-office and server-side rules, send limits, and the delivery reputation of the sending infrastructure. A self-hosted groupware is judged on the mail server it ships; a suite whose mail app is only a client for another server scores at the level of that client.

0 — No mailbox at all; a product that only sends transactional mail or only reads another provider's mail without a server of its own or a documented one to pair it with.

3 — Mailboxes on a custom domain with IMAP and SMTP and a webmail; aliases, shared mailboxes, filtering and DKIM or DMARC are basic or not described.

5 — Several custom domains with a documented DNS set-up, aliases and distribution lists, shared or functional mailboxes, IMAP and SMTP plus mobile apps, spam and malware filtering, SPF and DKIM signing, mailbox size per plan stated, server-side rules and out-of-office replies.

8 — Exchange ActiveSync or native Outlook (MAPI) support, DMARC reporting and MTA-STS or DANE, catch-all and plus addressing, delegated access and send-as, quarantine an admin can review, send and attachment limits stated, and the deliverability of the outbound infrastructure documented.

10 — A mail platform a large organisation runs on: every protocol above with feature parity stated per client, inbound and outbound gateways configurable, journaling, DANE and MTA-STS enforced, delivery monitoring and bounce analysis for admins, and mail flow documented end to end.

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The IT Service Provider

Domain set-up is documented properly (TXT, MX, SPF, DKIM, MTA-STS and a recommended DMARC record with a status check), catch-all and unlimited custom-domain aliases exist, and the spam filter and regex inbox rules are real. But the vendor itself states "We do not offer IMAP", so no Outlook, no ActiveSync, and every client lives in Tuta's own apps; send limits (100 mails per hour) and attachment sizes are stated, and we found no public information on distribution lists, out-of-office replies or an admin-viewable quarantine. 1 4 8 11 12 13

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Calendar, contacts & office apps

How this is scored

What the office plans and writes with: shared and team calendars, free/busy lookup, meeting invitations across providers, room and resource booking, shared address books and a company directory, CalDAV and CardDAV or ActiveSync for phones, Outlook calendar sync, tasks, online office documents with co-editing, file storage that comes with the suite, video meetings and chat inside the bundle, and the desktop and mobile apps.

0 — Mail only, with no calendar or contacts of any kind.

3 — A personal calendar and address book in the webmail; sharing, resources, sync protocols and office apps are basic or not described.

5 — Shared calendars and address books, meeting invitations with free/busy lookup, CalDAV and CardDAV or ActiveSync sync to phones and desktop clients, a company-wide address book, tasks, and either online office documents or a documented integration with an office suite.

8 — Room and resource booking with approval, delegated calendar access, Outlook calendar and contacts sync documented, co-editing of documents and spreadsheets in the browser, file storage with sharing, video meetings in the bundle, and apps for desktop, iOS and Android.

10 — A full office suite that replaces Microsoft 365 for a whole organisation: every function above with Microsoft file formats edited without loss, scheduling across organisations, resource planning, offline editing, an accessible interface stated against a standard, and feature parity across web, desktop and mobile documented.

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The IT Service Provider

Shared calendars with read-only, read-write and manage-sharing permissions, iCal invites,.ics import and export, multiple calendars, contacts sync to phones, and apps on Windows, macOS, Linux, Android and iOS are all documented. We found no public information on free/busy lookup, room or resource booking, a company-wide directory, or any office documents — the bundled Drive is file storage in closed beta with no editing described, and no video meetings or chat appear anywhere. 1 2 13 14 15

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Security, encryption & compliance archiving

How this is scored

How mail and documents are protected and kept: TLS enforced in transit, encryption at rest, end-to-end encryption or S/MIME and PGP, who at the provider can read a mailbox, two-factor authentication and passkeys, phishing, malware and account-takeover protection, audit-proof archiving that meets GoBD, retention policies and legal hold, eDiscovery, backups and restore of deleted mail, a transparency report on authority requests, and certifications (ISO 27001, BSI C5, SOC 2) with their scope.

0 — No security information of any kind; no encryption, two-factor sign-in or archiving stated.

3 — Encrypted connections and a password login; encryption at rest, two-factor sign-in, archiving and certifications are basic or not described.

5 — TLS in transit and encryption at rest stated, two-factor authentication, spam, phishing and malware protection, restore of deleted mail for a stated period, archiving offered (built in or as an add-on), and a certification such as ISO 27001 stated for the data centres or the service.

8 — End-to-end encryption, S/MIME or PGP supported, GoBD-compliant archiving documented, retention policies and legal hold, enforced two-factor or passkeys for all users, a transparency report on authority requests, and certifications such as ISO 27001 or BSI C5 published with their scope and auditor.

10 — Security that holds up in an audit of a regulated organisation: zero-access or customer-held keys where the provider cannot read mail, eDiscovery, tamper-proof archive with documented verification, every certification published with its report or attestation available, independent security audits or open-source code reviewed, and incident disclosure documented.

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The IT Service Provider

This is the strongest flank: end-to-end encryption of mail, calendars and contacts (AES 256, quantum-safe Kyber-1024), zero-access stated in the vendor's own words, TLS, admin-enforced two-factor with U2F and TOTP, phishing signatures, a SySS penetration test with a named auditor, GPLv3 client code and ISO 27001 data centres in Germany. Below that it thins out: a one-line GoBD claim with no archiving product, retention policies, legal hold or eDiscovery described, no transparency report, and the captured pages give different figures for backups — the business page advertises automatic backups while the terms place backup responsibility on the customer. 1 4 5 6 11 16 17 18

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Administration, identity & partner management

How this is scored

How an IT team or an IT service provider runs it: an admin console for users, groups, mailboxes and domains, admin roles, single sign-on (SAML or OpenID Connect), sync with Active Directory, Entra ID or LDAP, SCIM provisioning, mobile device policies and remote wipe, audit logs of admin and user actions, usage reports, a documented API for provisioning, multi-tenant or reseller accounts for partners managing several customers, and the support channels and response times per plan.

0 — No administration; one login per mailbox and nothing managed centrally.

3 — A web console to add mailboxes and aliases; roles, single sign-on, directory sync and audit logs are basic or not described.

5 — An admin console for users, groups, mailboxes and domains, admin roles, two-factor sign-in enforceable by the admin, password policies, a documented API or command line for provisioning, an activity or audit log, and business support by phone or ticket stated per plan.

8 — Single sign-on (SAML or OpenID Connect), Active Directory, Entra ID or LDAP sync, SCIM provisioning, mobile device policies with remote wipe, audit logs exportable, delegated administration, partner or reseller accounts that manage several customer organisations, and support response times stated.

10 — Administration that scales across many organisations: every setting reachable by API with parity stated, granular role scopes, policies by group, logs streamed to a SIEM, white-label partner offerings with separate billing, and an SLA with service credits published.

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The IT Service Provider

There is a genuine console — user management, multiple admin roles, sign-in-as-user, centralized billing, whitelabel, and admins who can enforce two-factor and reset employee passwords — enough for a small client. For a provider running many customers it stops there: we found no public information on a provisioning API, single sign-on or directory sync, admin audit logs, device policies with remote wipe, or reseller and partner accounts, and support is email or priority email with no response times stated. 1 4 7 13 16

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Migration, open standards & exit

How this is scored

How the organisation gets in and out: migration from Exchange, Microsoft 365, Google Workspace or another IMAP provider with a documented tool or service, mail, calendars and contacts carried over, coexistence during a move, standard protocols (IMAP, CalDAV, CardDAV, JMAP, open document formats) rather than proprietary ones, export of a mailbox and of the whole organisation in standard formats (mbox, EML, PST, ICS, vCard), open-source code or a self-hosted edition, what happens to data when the contract ends, and how domains and DNS are handed back.

0 — No way to bring mail in or take it out; a proprietary store with no IMAP access or export.

3 — IMAP access to mail; a migration path, calendar and contacts export and the end-of-contract handling are basic or not described.

5 — A documented migration from Exchange, Microsoft 365 or Google (a tool, an import or a service), mail, calendars and contacts imported, IMAP, CalDAV and CardDAV or ActiveSync access, export of mail, calendars and contacts in standard formats, and the deletion of data after the contract ends stated.

8 — A migration service or tool that moves whole organisations with calendars and permissions, coexistence with free/busy during the move, open document formats supported natively, export of the whole organisation by the admin, an open-source code base or a self-hosted edition, and a data return period after cancellation stated.

10 — An exit that costs nothing but time: every record exportable in open formats with the method documented, a self-hosted open-source edition with feature parity stated, migration in and out documented with the same tools, and a contractual data return and deletion with confirmation.

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The IT Service Provider

Getting in is documented as forwarding from Gmail, Outlook, GMX and others plus contact and calendar import, and getting out is honest — personal data deleted no later than 30 days after contract end, self-service termination, and all clients published under GPLv3. 4 6 10 11 12 13 17

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European sovereignty

How this is scored

Who the contracting entity and the parent company are, where mailboxes, calendars, contacts, documents and backups are stored and processed, who at the provider or its subprocessors can access them, and who the subprocessors are (data centres, spam filtering, support, payment, AI features). Independently sourced by the sovereignty pipeline. An EU data region offered by a non-EU parent is part of the chain, not the whole of it. A self-hosted or open-source edition the customer runs on its own European servers counts as the customer's chain, whatever the vendor's seat.

0 — Non-EU vendor and contracting entity, hosting unstated, subprocessors unnamed, and no data processing agreement offered.

3 — A privacy policy and a data processing agreement exist, but hosting location is unstated or non-EU and the subprocessors are not listed.

5 — EU hosting available and an EU contracting entity or EU representative, but parts of the chain (spam filtering, support, backups, AI features) run through non-EU providers or a non-EU parent without a stated safeguard.

8 — EU hosting on named infrastructure, EU contracting entity, subprocessors listed with their locations, a data processing agreement published, and security certifications (ISO 27001, BSI C5) stated — or a self-hosted edition documented that keeps every mailbox on the customer's own servers.

10 — Sovereign end to end and evidenced: European ownership, entity, hosting and every subprocessor, or a self-hosted open-source edition with no call home, data export and deletion documented, and certifications published with their scope rather than implied.

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The IT Service Provider

Tutao GmbH in Hanover is the registered contracting entity, mail, calendars and files sit on the vendor's own servers in ISO 27001 certified data centres in Germany, a data processing agreement is published, and the privacy statement names its subprocessors with locations — Braintree in the USA for credit-card payments (disclosed as a third-country transfer), PayPal in Luxembourg, support staff in Hanover. The chain is about as European as a hosted service gets; it stays below the top because card payments can route through a US processor and the certification is stated for the data centres without a published report. 1 4 5 9 16 17

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Pricing transparency

How this is scored

Whether a buyer can compute the real annual cost from public pages alone: price per user or mailbox per tier, storage per user, what shared mailboxes, aliases and extra domains cost, which features (archiving, office apps, SSO, advanced security, more storage) cost extra, the first-year discount and the regular price after it, minimum users and term, monthly versus annual billing, and VAT.

0 — No public prices at all; every customer is a sales call.

3 — A starting price per user exists, but how cost scales with storage, users, add-ons or after the first year is unclear.

5 — Tiers are public with their price per user and main inclusions, but at least one commonly needed piece (archiving, extra storage, shared mailboxes, SSO, the price after the introductory period) is unpriced or "on request".

8 — Every tier priced publicly per user with storage, add-ons priced, the regular price after any introductory discount stated, minimum users and term stated, monthly and annual billing compared, and VAT treatment stated.

10 — Complete price computability: annual cost derivable for a given number of users, storage and add-ons, with every support, migration and archive fee and the cancellation and data-return terms published.

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The IT Service Provider

The three business tiers are public with per-user prices (€6, €8 and €12 per user per month, paid yearly, excluding taxes), and each tier's storage, custom-domain count, extra addresses and support level sit side by side, with contract terms (monthly or yearly, then cancellable anytime) and payment options including invoice for business customers. Gaps remain before I could quote a client blind: we found no public information on monthly billing prices for business plans, extra-storage add-ons or minimum users, and the "Save €19.20" figures appear without the comparison base, so any introductory saving is not separable from the regular price. 1 8 11 13

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European sovereignty — proven facts

0 of 6 dimensions proven

Built only from facts shown on the vendor's own pages. A dimension we could not prove is left open, not scored as zero.

Hosting location Not determined ⚠ unverified — uncited Report an error
Hosting options Not determined — uncited Report an error
Open source Not determined ⚠ unverified — uncited Report an error
Data processing agreement Not determined — uncited Report an error
Transfer impact assessment Not determined — uncited Report an error

Questions about Tuta Business

Is Tuta Business European?

Yes. whats-best.ai classifies Tuta Business as EU-Made.

Where does Tuta Business store data?

The default storage location for customer data is not stated on the vendor’s pages as of 5 Nov 2026. The vendor’s pages mention Germany as hosting location, per the vendor’s page captured 5 Nov 2026.

Does Tuta Business have a free plan?

Yes. Tuta Business has a free plan, per the vendor’s page captured 5 Nov 2026.

What are the best alternatives to Tuta Business?

As of 6 Nov 2026, the panel rates grommunio (3.5/5), Infomaniak kSuite (3.5/5) and Nextcloud Hub (Groupware & Office) (3.5/5) highest among the other 14 Business Email & Office Suites products evaluated. Ratings that look equal are rounded to half stars; the order uses the unrounded rating, then the name. The highest-rated European alternative is grommunio (EU-Made). Ratings are the AI panel’s opinion, formed from public evidence: how scores are made. The full list, with European products first: Tuta Business alternatives.

Where this could be wrong

What we left out

A claim that does not survive our checks costs us the claim, not the page. This is what was taken off this one.

Do you know more about Tuta Business? Tell us Report an error on this page

Sources (18)

The pages every claim on this page was read from — each one checked, dated, and kept verifiable.

  1. 1 Vendor homepage (business) tuta.com Checked 5 Nov 2026 Details →
  2. 2 Features page (calendar) tuta.com Checked 5 Nov 2026 Details →
  3. 3 Features page (encryption) tuta.com Checked 5 Nov 2026 Details →
  4. 4 Security / trust page tuta.com Checked 5 Nov 2026 Details →
  5. 5 Features page (digital sovereignty) tuta.com Checked 5 Nov 2026 Details →
  6. 6 Features page (open source) tuta.com Checked 5 Nov 2026 Details →
  7. 7 Documentation (help and FAQ) tuta.com Checked 5 Nov 2026 Details →
  8. 8 Pricing page tuta.com Checked 5 Nov 2026 Details →
  9. 9 Legal notice tuta.com Checked 5 Nov 2026 Details →
  10. 10 Privacy policy tuta.com Checked 5 Nov 2026 Details →
  11. 11 Terms of service tuta.com Checked 5 Nov 2026 Details →
  12. 12 Mail, domains & deliverability — found from sitemap tuta.com Checked 5 Nov 2026 Details →
  13. 13 Mail, domains & deliverability — found from sitemap tuta.com Checked 5 Nov 2026 Details →
  14. 14 Calendar, contacts & office apps — found from sitemap tuta.com Checked 5 Nov 2026 Details →
  15. 15 Calendar, contacts & office apps — found from sitemap tuta.com Checked 5 Nov 2026 Details →
  16. 16 Security, encryption & compliance archiving — found from sitemap tuta.com Checked 5 Nov 2026 Details →
  17. 17 Security, encryption & compliance archiving — found from sitemap tuta.com Checked 5 Nov 2026 Details →
  18. 18 Migration, open standards & exit — found from sitemap tuta.com Checked 5 Nov 2026 Details →