European Alternatives to Outlook
Microsoft’s email and calendar client and hosted mailbox service. Here are 7 GDPR-compliant European alternatives that keep your data in the EU.
GDPR Compliance
Built for European privacy standards from day one
EU Data Residency
Your data never leaves European servers
No US CLOUD Act
Not subject to US government data requests
Local Support
European timezone customer support
Compare Outlook Alternatives
| Company | Headquarters | Data Residency | Founded | Pricing | Open Source | Employees | Funding | Replaces | Website |
|---|---|---|---|---|---|---|---|---|---|
| Prague, Czech Republic | 🇪🇺 EU Available | 2001 | Paid business plans for hosted or private deployments | ❌ No | N/A | Private company | Google Workspace, Microsoft 365, Outlook | Visit | |
| Berlin, Germany | 🇪🇺 EU Only | 2014 | Paid plans from low monthly seat pricing | ❌ No | ~30 | Bootstrapped (Heinlein Group) | Google Workspace, Microsoft 365, Outlook | Visit | |
| Brussels, Belgium | 🇪🇺 EU Only | 1999 | Free tier, paid plans for custom-domain and team use | ❌ No | ~50 | Private company | Gmail, Google Workspace, Outlook | Visit | |
| Berlin, Germany | 🇪🇺 EU Only | 2009 | Low-cost monthly mailbox pricing | ❌ No | ~10 | Bootstrapped | Gmail, Outlook | Visit | |
ProtonMail Open Source | Geneva, Switzerland | 🇪🇺 EU Only | 2014 | Free tier, from €3.99/mo | ✅ Yes | N/A | N/A | Gmail, Outlook | Visit |
7 European Alternatives
IceWarp
Czech business email and collaboration suite with mail, calendars, chat, meetings, storage, and documents in one workspace.
German business email and office suite with IMAP, custom domains, and broader productivity tooling.
Belgian secure email and lightweight collaboration suite with OpenPGP, custom domains, and shared workspace features.
German privacy-first mailbox service with green hosting, custom domains, and simple business-email fundamentals.
Swiss encrypted email. The gold standard for private email.
Norwegian business email service with custom domains, standard client support, and a long-running privacy-first mailbox offering.
Dutch privacy-focused business email with custom domains, aliases, and encrypted mailbox hosting for teams leaving Gmail.