OX App Suite
🇩🇪 DE
German email and collaboration suite with calendar, tasks and OX Drive
Replaces
OX App Suite is sought as a European alternative to:
Features
Email and communication
- Shared and functional mailboxes
- Delegation and 'on behalf of' access
- Antivirus and antispam protection
- Attachment handling
- Automatic tabbed inboxes
Calendar, contacts and tasks
- Shared calendars and contacts
- Scheduling and time-zone support
- CalDAV/CardDAV synchronization
Cloud storage and file sharing
- File storage and previews
- Sharing and permissions
- Version control
- Send large attachments as links
- Connect external storage
Document editing and collaboration
- Online editing for text, spreadsheets, presentations
- Simultaneous collaboration
Security
- Email and file encryption with OpenPGP
- PGP or S/MIME encryption
- Secure communication with external recipients
AI assistance
- Summarize or analyze email
- Help compose replies
- Auto-completion
- Text translation
- Optional and subject to organizational policies
Service-provider capabilities
- Configurable white-label platform
- Service tiers and add-ons
- Operational tools
Pricing
Pricing is not publicly disclosed. Contact Open-Xchange for a quote.
EU Trust Profile
What we verified against public sources, last checked 2026-10-29. Every point links to its evidence.
- Evidence →EU data residency
OX Cloud is hosted in geo-redundant data centers in Germany.
- Evidence →European legal entity
Registered at District Court Cologne, HRB 95366.
- Evidence →Data Processing Agreement (DPA)
Public Data Processing Agreement available as Annex E, including subcontractor exhibit.
- Evidence →Public sub-processor list
Subcontractor list referenced in Section 5, Exhibit 1 of the DPA.
- Evidence →Trust center / security page
Dedicated trust center with compliance and security information.
- Evidence →ISO 27001ISO/IEC 27001:2022
Certified by TÜV Rheinland of North America.
- Evidence →Self-hosting available
Software Subscription allows deployment in the customer's own data center or Kubernetes architecture.
- Evidence →Open source
Frontend UI is AGPLv3; other components include GPLv2-licensed third-party libraries.
- Evidence →Documented data export
GDPR data-export feature packages personal data into ZIP archives.
We list only what we could verify against a public source on the check date. A point that is absent was not established either way — it is not a finding against the vendor. The vendor's own information prevails.
Work at OX App Suite?
This badge is free for every vendor we list and has no bearing on the order of any list. It is issued on the basis of a verified European headquarters (DE) and the compliance points we checked against public sources — the date on it is the date we last checked.
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Reviews
Recurring themes, synthesized from public reviews across portals.
What users value
- Reliable email and calendar with custom domain support
- Simple and intuitive interface for daily use
- All-in-one basics: email, calendar, tasks, contacts, and file sharing
- Good synchronization across devices
- Precise fit for users needing straightforward collaboration tools
- Team collaboration features including file sharing and videoconferencing
- Task management and planning integrated into the suite
Where users see room to improve
- · Can feel too basic for users accustomed to feature-rich suites like Gmail
- · Occasional bugs reported by users
Integrations
OX App Suite: frequently asked questions
- Which tools does OX App Suite integrate with?
- OX App Suite connects with Dropbox, Google Drive, Microsoft 365 OneDrive, Box, Nextcloud, ownCloud, OpenCloud (WebDAV) and DAVx⁵ Select, plus 4 more integrations we found.
- Where does OX App Suite store its data?
- OX Cloud is hosted in geo-redundant data centers in Germany. Public Data Processing Agreement available as Annex E, including subcontractor exhibit.
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Feature, pricing and integration details are based on web research (as of 2026-10-29), without guarantee, errors are possible. The vendor's website prevails.