DeutschComparison
Xenaxio vs Microsoft 365
Microsoft 365 is the standard in many offices, and Copilot can do a lot. Microsoft is a US company, so US law such as the CLOUD Act applies even to data in European data centres. Xenaxio covers email, calendar, chat, files and AI – in Germany or on your own servers.
| Microsoft 365 | Xenaxio | |
|---|---|---|
| Email, calendar, contacts, files | Yes | Yes |
| Team chat | Teams | Rooms |
| Online booking | Bookings | Yes |
| AI assistant in the mailbox | Copilot, paid add-on | included, with limits per person |
| Where your data is stored | Microsoft’s cloud | Germany or your own servers |
| Your own AI model | No | Yes |
| Everything on your own servers, AI included | No | Yes |
| Word, Excel, PowerPoint | Yes | No |
| Video meetings | Teams | in the browser, guests without an account |
| Webinars | Yes | on request, up to 300 viewers |
| Meeting recordings | Yes | No |
| Open-source web client | No | yes (AGPL) |
As of October 2026. Other providers’ features and plans change; please check the details on their websites.
Xenaxio fits better if …
- You mainly need email, calendar, chat and files
- Data and AI should stay in Europe – or entirely on your servers
- You want to see in an audit log what the AI did
- You don’t want to pay for office apps you don’t use
Microsoft 365 fits better if …
- Your team works in Word, Excel and Teams every day
- You need office apps and meeting recordings from one provider
In detail
Data, law and the CLOUD Act
Microsoft keeps data of European customers in European data centres, but as a US company it is subject to US law such as the CLOUD Act. With Xenaxio Cloud, mailboxes, files and the database are stored in Germany and AI requests go to the EU endpoint of Mistral AI. If that is still not enough, Xenaxio runs entirely on your own servers, AI model included – then no provider has access to your data.
Copilot and the Xenaxio assistant
Copilot is a paid add-on to the Microsoft licence and also works in Word and Excel. The Xenaxio assistant is included, with limits per person set by your administrator. It works across mail, shared mailboxes, calendar, tasks, files and – if allowed – Rooms, answers with links to its sources, saves replies as drafts and creates meetings only after you confirm. Every action is in the audit log, and your company can connect its own model instead of Mistral.
Moving from Microsoft 365
Outlook keeps working over IMAP and SMTP, so nobody has to change their mail program on day one. In the pilot programme we move the mailboxes for you; Outlook calendars stay visible through a subscription link while you switch. Documents from Word and Excel live in Xenaxio Files and open in the programs you already use – Xenaxio itself has no office apps.
Questions
How does Xenaxio differ from Microsoft 365?
Microsoft 365 is the standard in many offices, and Copilot can do a lot. Microsoft is a US company, so US law such as the CLOUD Act applies even to data in European data centres. Xenaxio covers email, calendar, chat, files and AI – in Germany or on your own servers.
When is Xenaxio a better fit than Microsoft 365?
You mainly need email, calendar, chat and files. Data and AI should stay in Europe – or entirely on your servers. You want to see in an audit log what the AI did. You don’t want to pay for office apps you don’t use.
When does Microsoft 365 fit better?
Your team works in Word, Excel and Teams every day. You need office apps and meeting recordings from one provider.
Is Xenaxio an alternative to Microsoft 365 or Google Workspace?
For email, calendar, contacts and files: yes. Xenaxio is built for teams that want to keep their communication in Europe and still work with AI – without depending on US big tech.
Can we keep using Outlook, Thunderbird or Apple Mail?
Yes, over IMAP and SMTP. The AI assistant is available in the Xenaxio web client, which also works on your phone – in the browser or as an installed app.
Ready for a sovereign workspace?
In our cloud or on your servers – we set up Xenaxio for your team.