OX App Suite vs Microsoft Outlook
Last updated October 2026
Looking for a European alternative to Microsoft Outlook? Here's how OX App Suite compares, on EU hosting, GDPR and what it does.
Our pick for a European buyer: OX App Suite. We weight data residency, GDPR and EU jurisdiction above everything else — that is the constraint this directory exists to solve.
What it is
German email and collaboration suite with calendar, tasks and OX Drive
not established
Headquarters
🇩🇪 DE
No
EU data residency
Yes, for all customers
not established
DSGVO / GDPR
Yes
not established
Certifications
ISO/IEC 27001:2022
not established
Price from
No
not established
Free plan
No
not established
Open Source
No
not established
Ratings
No
No
Integrations
Dropbox, Google Drive, Microsoft 365 OneDrive, Box, Nextcloud +7
not established
We have not yet completed our own research on Microsoft Outlook; rows above show only what we can evidence. Check the vendor for specifics.
Where each one wins
OX App Suite
Strengths
- +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
Limitations
- −Can feel too basic for users accustomed to feature-rich suites like Gmail
- −Occasional bugs reported by users
Microsoft Outlook
Review sentiment not yet compiled.
Data residency & compliance
OX App Suite
Microsoft Outlook
EU data residency
Yes, for all customers
not established
Transfer mechanism
Not required — data stays in the EU
not established
Certifications
ISO/IEC 27001:2022
No
Features
OX App Suite
- Email and communication
- Shared and functional mailboxes, Delegation and 'on behalf of' access, Antivirus and antispam protection, Attachment handling
- 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
- 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
Microsoft Outlook
Feature breakdown not yet compiled.