Microsoft 365 Business vs GMX
On privacy it's GMX. On price it's GMX. On features it's Microsoft 365 Business. Here's everything side by side, last checked 25 October 2026.
Which should you choose?
- Microsoft 365 Business suits you best if you want email at your own domain name.
- GMX suits you best if you want a mailbox that costs nothing; a free plan before you pay anything; and more room (65 GB, against 50 GB).
| Feature | Microsoft 365 Business | GMX |
|---|---|---|
| Overall | 2.5 | 3.5 |
| Privacy | 1.0 | 2.0 |
| Price | 2.5 | 5.0 |
| Features | 5.0 | 4.0 |
| Cheapest plan | Business Basic £5.40 per user a month, yearly, ex VAT | Free Free (paid plans only for German and Austrian residents) |
| Free plan | No | Yes, with adverts |
| Storage | 50 GB | 65 GB |
| Your own domain | ✓ Yes | No |
| End-to-end encryption | No | No |
| Company based in | United States | Germany |
| Your data is kept in | UK data centres for UK tenants (London, Cardiff, Durham) | Germany (European data centres) |
| Founded | 2011 | 1997 |
| Free trial | One month free on some plans | Free |
| Funded by advertising | Yes, or its parent company is | Yes, or its parent company is |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes | Up to 10 addresses |
| Open-source apps | No | No |
| Sign up without ID | No | No |
| White label | No | No |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 25 October 2026 |
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How Microsoft 365 Business and GMX differ
- Microsoft 365 Business's cheapest plan is Business Basic (£5.40 per user a month, yearly, ex VAT); GMX's is Free (Free (paid plans only for German and Austrian residents)).
- For free, Microsoft 365 Business gives you no free plan, and GMX a free plan (with adverts).
- Microsoft 365 Business comes with 50 GB of storage and GMX with 65 GB of storage.
- Data location: UK data centres for UK tenants (London, Cardiff, Durham) for Microsoft 365 Business, Germany (European data centres) for GMX.
- Microsoft 365 Business is based in the United States and GMX in Germany, so different privacy laws apply.
- Microsoft 365 Business lets you bring your own domain name; GMX doesn't.
- For extra addresses, Microsoft 365 Business has yes and GMX has up to 10 addresses.
Common questions
Which is more private, Microsoft 365 Business or GMX?
GMX scores 2 out of 5 for privacy and Microsoft 365 Business 1.
Which is cheaper, Microsoft 365 Business or GMX?
GMX costs nothing to start (Free (paid plans only for German and Austrian residents)). Microsoft 365 Business's cheapest plan, Business Basic, is £5.40 per user a month, yearly, ex VAT.
Do Microsoft 365 Business and GMX work with my own domain?
Only Microsoft 365 Business does (Yes). With GMX your address stays on its own domain.
Where do Microsoft 365 Business and GMX keep my email?
Microsoft 365 Business keeps it in the UK data centres for UK tenants (London, Cardiff, Durham). GMX keeps it in Germany (European data centres).
Price changes and news
- 27 July 2026 Microsoft 365 Business: £5.40 (UK price change from 1 July 2026)
- 1 June 2026 Microsoft 365 Business: £4.90
The latest headlines: Microsoft 365 Business news · GMX news.
Not sold on either? Try these
Microsoft 365 Business vs mailbox.org · GMX vs mailbox.org · Microsoft 365 Business vs Posteo · GMX vs Posteo · Microsoft 365 Business vs Proton Mail · GMX vs Proton Mail
Moving your email
Moving to Microsoft 365 Business · Moving from Microsoft 365 Business. Or see all my switching guides.