# mailbox.org Business vs Tuta Business — Business Email & Office Suites

As of 6 Nov 2026, the panel rates [mailbox.org Business](https://whats-best.ai/software/business-email/mailbox-org) 3/5 and [Tuta Business](https://whats-best.ai/software/business-email/tuta-business) 3/5 in Business Email & Office Suites. Weighted by what each judge cares about, 5 of the 6 judges pick mailbox.org Business and 1 picks Tuta Business. mailbox.org Business scores higher on 4 of 7 criteria (Calendar, contacts & office apps, Migration, open standards & exit, Administration, identity & partner management, plus 1 more). Tuta Business scores higher on 3 of 7 criteria (European sovereignty, Security, encryption & compliance archiving and Pricing transparency). Provenance — mailbox.org Business: EU-Made; Tuta Business: EU-Made. Ratings are the AI panel’s opinion, formed from public evidence: [how scores are made](https://whats-best.ai/methodology#ordering).

- Canonical page: https://whats-best.ai/compare/mailbox-org-vs-tuta-business
- mailbox.org Business: https://whats-best.ai/software/business-email/mailbox-org ([md](https://whats-best.ai/software/business-email/mailbox-org.md))
- Tuta Business: https://whats-best.ai/software/business-email/tuta-business ([md](https://whats-best.ai/software/business-email/tuta-business.md))
- Category: [Business Email & Office Suites](https://whats-best.ai/software/business-email.md)
- Data as of: 2026-11-06

**AI-generated.** Both products were evaluated from public evidence by the same panel of AI judges under the same rubric; without that, no comparison is published. Not a hands-on test; no score can be bought, on either side. How scores are made: https://whats-best.ai/methodology

## The short answer

mailbox.org Business leads four criteria — mail and deliverability (5.5 vs 5.0; four lean), calendar and office (5.5 vs 4.0; five lean), administration and identity (5.3 vs 4.2; five lean), migration and portability (5.0 vs 3.8; five lean). Tuta Business leads sovereignty (8.2 vs 6.0; five lean, one tie), security and compliance (7.0 vs 5.7; two lean, four tie) and, on mean, pricing transparency (6.5 vs 5.8; leans split two mailbox.org Business, one Tuta Business, three tie). Weighted totals favor mailbox.org Business for the IT administrator (6.3 vs 5.3), public-sector IT lead (6.8 vs 5.5), IT service provider (6.8 vs 5.2), skeptic (6.4 vs 5.7); the data protection officer totals 5.7 for Tuta Business against 0; the small-firm owner shows no total. Both carry the same EU made provenance, and each recorded sovereignty attribute — legal entity jurisdiction, data residency, hosting options, open source, DPA, TIA — reads "unknown."

**Choose mailbox.org Business if:**
- You need IMAP or POP3 access for desktop clients: four of six judges lean mailbox.org Business on mail and deliverability (5.5 vs 5.0), and the Tuta Business verdict records a vendor-stated absence of IMAP and a 100 emails-per-hour cap.
- Your team wants calendar, browser office editing, drive and video meetings in one bundle: calendar and office scores 5.5 vs 4.0 with five judges leaning mailbox.org Business, and the Tuta Business verdict found no public information on document co-editing.
- You are moving accounts from Gmail, Outlook.com or T-Online: migration and portability leans mailbox.org Business five to one (5.0 vs 3.8), and the published Audriga list names those sources.
- You are a public-sector IT lead or IT service provider: those weighted totals read 6.8 vs 5.5 and 6.8 vs 5.2 for mailbox.org Business.
- Your priorities match the IT administrator's or the skeptic's: those weighted totals read 6.3 vs 5.3 and 6.4 vs 5.7.

**Choose Tuta Business if:**
- You need end-to-end encryption the vendor states even it cannot read: security and compliance scores 7.0 vs 5.7, with two judges leaning Tuta Business and four tied, crediting quantum-safe encryption.
- Sovereignty is your deciding criterion: Tuta Business scores 8.2 vs 6.0, five judges lean its way with one tie, and the verdict credits hosting on its own servers in ISO 27001 certified data centres in Germany.
- Your compliance file needs a published data processing agreement and a named SySS penetration test, both recorded in the Tuta Business verdict.
- Your data protection officer holds the deciding vote: that judge's weighted total reads 5.7 for Tuta Business against 0 for mailbox.org Business, whose verdict records that judge's scores as 0 on the same seven criteria.

## Overall

| | mailbox.org Business | Tuta Business |
|---|---|---|
| Panel rating | 3/5 | 3/5 |
| Provenance | EU-Made | EU-Made |
| Sovereignty | not determined | not determined |

## The bench's picks

| Judge | mailbox.org Business | Tuta Business | Pick |
|---|---|---|---|
| The Small Firm Owner | 3.5/5 | 3/5 | mailbox.org Business |
| The IT Administrator | 3/5 | 2.5/5 | mailbox.org Business |
| The Public Sector IT Lead | 3.5/5 | 3/5 | mailbox.org Business |
| The IT Service Provider | 3.5/5 | 2.5/5 | mailbox.org Business |
| The Data Protection Officer | 0/5 | 3/5 | Tuta Business |
| The Skeptic | 3/5 | 3/5 | mailbox.org Business |

## Criterion by criterion

Bench average per criterion, out of 5; the lean counts which product each judge scored higher.

| Criterion | mailbox.org Business | Tuta Business | The bench leans |
|---|---|---|---|
| Mail, domains & deliverability | 3/5 | 2.5/5 | mailbox.org Business, 4 of 6 judges |
| Calendar, contacts & office apps | 3/5 | 2/5 | mailbox.org Business, 5 of 6 judges |
| Security, encryption & compliance archiving | 3/5 | 3.5/5 | Tuta Business, 2 of 6 judges |
| Administration, identity & partner management | 2.5/5 | 2/5 | mailbox.org Business, 5 of 6 judges |
| Migration, open standards & exit | 2.5/5 | 2/5 | mailbox.org Business, 5 of 6 judges |
| European sovereignty | 3/5 | 4/5 | Tuta Business, 5 of 6 judges |
| Pricing transparency | 3/5 | 3.5/5 | mailbox.org Business, 2 of 6 judges |

## Sovereignty, side by side

| Dimension | mailbox.org Business | Tuta Business |
|---|---|---|
| Legal entity | Not determined | Not determined |
| Hosting location | Not determined | Not determined |
| Hosting options | Not determined | Not determined |
| Open source | Not determined | Not determined |
| Data processing agreement | Not determined | Not determined |
| Transfer impact assessment | Not determined | Not determined |

## Facts, side by side

Only facts both products carry under the same definition; each is the vendor's own dated statement ([S*n*] → Sources).

| Fact | mailbox.org Business | Tuta Business |
|---|---|---|
| Compliance · GDPR | yes [S1] | yes · yes [S2] |
| Hosting · Server location | Berlin · yes · Germany [S3] | Germany · German privacy protection laws · ISO27001 [S4] |
| Legal · Controller | Heinlein Hosting GmbH · Schwedter Straße 8/9B, 10119 Berlin, Deutschland [S5] | Tutao GmbH [S6] |
| Legal · VAT id | DE335125423 [S7] | DE280903265 [S8] |
| Product · Catch all | yes [S9] | yes [S10] |
| Product · Encryption | yes · yes [S1] | yes · yes · yes [S2] |
| Product · Modules | Mail · Drive · Meet · Office · Admin [S7] | Tuta Mail · Tuta Calendar · Tuta Drive [S11] |
| Product · Two factor auth | yes · yes [S3] | yes · yes · U2F [S12] |

## Sources

- [S1] Features page (migration): https://mailbox.org/de/umzug-zu-mailbox-e-mails-sicher-migrieren/ (checked 2026-11-05)
- [S2] Features page (calendar): https://tuta.com/calendar (checked 2026-11-05)
- [S3] Security / trust page: https://mailbox.org/de/sicherheit/ (checked 2026-11-05)
- [S4] Security, encryption & compliance archiving — found from sitemap: https://tuta.com/support/security (checked 2026-11-05)
- [S5] Privacy policy: https://mailbox.org/de/datenschutz/ (checked 2026-11-05)
- [S6] Security, encryption & compliance archiving — found from sitemap: https://tuta.com/privacy-policy-archived (checked 2026-11-05)
- [S7] Legal notice: https://mailbox.org/de/impressum/ (checked 2026-11-05)
- [S8] Legal notice: https://tuta.com/imprint (checked 2026-11-05)
- [S9] Mail, domains & deliverability — found from sitemap: https://kb.mailbox.org/de/business/eigene-domain/e-mail-adressen-mit-eigener-domain-nutzen/ (checked 2026-11-05)
- [S10] Vendor homepage (business): https://tuta.com/business (checked 2026-11-05)
- [S11] Features page (digital sovereignty): https://tuta.com/digital-sovereignty (checked 2026-11-05)
- [S12] Security / trust page: https://tuta.com/security (checked 2026-11-05)

## Questions

### Which is better, mailbox.org Business or Tuta Business?

As of 6 Nov 2026, the panel rates both 3/5. Weighted by what each judge cares about, 5 of the 6 judges pick mailbox.org Business and 1 picks Tuta Business. Which one fits depends on the criteria that matter to you; the table on this page shows both side by side, and each judge’s reading has its own page. Both were scored by the same AI bench under the same rubric, from public evidence only, [as the methodology describes](https://whats-best.ai/methodology).

### Is mailbox.org Business or Tuta Business European?

mailbox.org Business is European (EU-Made). Tuta Business is European (EU-Made). Provenance is read from each company’s own legal pages: who builds it and who owns it.

### Where do mailbox.org Business and Tuta Business store customer data?

Per the vendors’ own pages as captured — mailbox.org Business: Default not stated; pages mention Germany. Tuta Business: Default not stated; pages mention Germany.

### Do mailbox.org Business and Tuta Business have a free plan?

As of 6 Nov 2026, Tuta Business’s own pages state a free plan; mailbox.org Business’s pages as captured do not. Each product page links the pricing page it was read from.

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Cite as: whats-best.ai, "mailbox.org Business vs Tuta Business", AI panel comparison, as of 2026-11-06. https://whats-best.ai/compare/mailbox-org-vs-tuta-business