Business Email & Office Suites · Alternatives
mailbox.org Business alternatives
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.
mailbox.org Business’s own page → All Business Email & Office Suites products →
European alternatives to mailbox.org Business
European by provenance (EU-made, EU origin with foreign ownership, or UK and wider Europe). Data hosting is stated only where the vendor’s own pages prove it.
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grommunio
EU-MadePanel rating
grommunio, an open-source Exchange replacement from grommunio GmbH of Vienna, scores between 5 and 8 across the seven criteria.
- Data hosting: not stated on the vendor’s pages
- Free plan: yes, per the vendor’s page captured 5 Nov 2026
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Infomaniak kSuite
UK / wider EuropePanel rating
Infomaniak kSuite — mail, calendar, contacts, kDrive, kChat and kMeet from Infomaniak Network SA of Geneva — scores strongest on sovereignty at 7 to 8: own Swiss data centres, data stated never to leave the vendor's own infrastructure, employee-held capital guarded by a foundation, and support staff in Geneva and Zurich.
- Data hosting: Default not stated; pages mention Switzerland
- Free plan: yes, per the vendor’s page captured 5 Nov 2026
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Panel rating
Nextcloud Hub is an open-source, self-hosted groupware and office suite from Nextcloud GmbH of Stuttgart (registered at AG München, HRB 227086), and the bench scores it highest where control matters: sovereignty at 8-9 and calendar and office at 7-8, with security and compliance at 7-8.
- Data hosting: not stated on the vendor’s pages
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Proton for Business
UK / wider EuropePanel rating
Proton for Business is the end-to-end encrypted mail, calendar, documents and storage suite from Proton AG in Geneva.
- Data hosting: not stated on the vendor’s pages
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ONLYOFFICE Workspace
EU-MadePanel rating
ONLYOFFICE Workspace, from Ascensio System SIA of Riga, reads as a document suite first and a mail platform second.
- Data hosting: not stated on the vendor’s pages
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IONOS E-Mail & Office
EU-MadePanel rating
The bench reads IONOS E-Mail & Office as a German mail-and-office package, strong on hosting, archiving and stated prices, thin on administration and exit.
- Data hosting: Default not stated; pages mention Germany
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Tuta Business
EU-MadePanel rating
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".
- Data hosting: Default not stated; pages mention Germany
- Free plan: yes, per the vendor’s page captured 5 Nov 2026
Tuta Business in detail → mailbox.org Business vs Tuta Business →
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Runbox
UK / wider EuropePanel rating
Runbox is email hosting from Runbox Solutions AS of Oslo, and the bench's scores are sharply two-sided.
- Data hosting: Default not stated; pages mention Norway
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Hostpoint E-Mail & Cloud Office
UK / wider EuropePanel rating
Hostpoint E-Mail & Cloud Office is a Swiss mail and office bundle, and the bench scores it highest where the pages are most open: pricing transparency sits at 6 with no spread, and calendar and office at 6 to 7.
- Data hosting: not stated on the vendor’s pages
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STRATO Mail
EU-MadePanel rating
STRATO Mail is a hosted German business e-mail product — webmail on Open-Xchange, mailboxes on your own.de domain, up to 250 aliases, server-side spam and virus filtering — and the judges' persona-weighted totals cluster at 4.2–4.6.
- Data hosting: not stated on the vendor’s pages
- Free plan: yes, per the vendor’s page captured 5 Nov 2026
Other alternatives
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Microsoft 365 Business
Rest of worldPanel rating
Microsoft 365 Business is a hosted Exchange Online suite bundled with Word, Excel, PowerPoint, Outlook, Teams and 1 TB of OneDrive per user.
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Zoho Workplace
Rest of worldPanel rating
Zoho Workplace, a business email and office suite from Zoho Corporation, is strongest on mail and deliverability and administration and identity, which both range 7 to 7: mailboxes on the customer's own domain with IMAP, POP, SMTP and ActiveSync, SPF, DKIM, DMARC and DNSBL checks with quarantine, and an admin console with role-based permissions, SAML single sign-on on every plan and a broad provisioning API.
- Free plan: yes, per the vendor’s page captured 5 Nov 2026
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Google Workspace
Rest of worldPanel rating
Google Workspace is Google LLC's business email and office suite, and the bench scored it strongest where the bundle is thickest: calendar and office sits at 6 throughout (minimum 6, maximum 6), with Gmail, Meet, Chat, Calendar, Drive, Docs, Sheets and Slides on every plan and Office-file interoperability stated throughout, while pricing transparency clusters at 6-7 with euro prices published for all three business tiers.
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Fastmail for Business
Rest of worldPanel rating
Fastmail for Business, from Fastmail Pty Ltd, Australia, earns its best scores on migration and portability, 5 to 6: a self-serve tool imports mail, contacts and calendars from IMAP, CardDAV or CalDAV sources, with everything reachable over JMAP, IMAP, POP, SMTP, CalDAV, CardDAV and WebDAV.