Microsoft 365 Business vs STRATO Mail
In short: STRATO Mail wins on privacy, STRATO Mail wins on price, and Microsoft 365 Business wins on features. The full comparison is below, last checked 22 October 2026.
Which should you choose?
- Go for Microsoft 365 Business if you'd like 50 GB of storage.
- STRATO Mail suits you best if you want a company that isn't funded by advertising and to pay less: €3 a month.
| Feature | Microsoft 365 Business | STRATO Mail |
|---|---|---|
| Overall | 2.5 | 3.5 |
| Privacy | 1.0 | 2.5 |
| Price | 2.5 | 4.0 |
| Features | 5.0 | 4.0 |
| Cheapest plan | Business Basic £5.40 per user a month, yearly, ex VAT | Mail Basic €3 a month |
| Free plan | No | No |
| Storage | 50 GB | 2 GB |
| Your own domain | ✓ Yes | ✓ Yes |
| 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 |
| Founded | 2011 | Unknown |
| Free trial | One month free on some plans | 1 month free |
| Funded by advertising | Yes, or its parent company is | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes | Yes |
| Open-source apps | No | No |
| Sign up without ID | No | No |
| White label | No | Unknown |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 22 October 2026 |
Want to add another? Open this in the compare tool.
Where they differ
- On price: Microsoft 365 Business Business Basic at £5.40 per user a month, yearly, ex VAT, against STRATO Mail Mail Basic at €3 a month.
- Space: Microsoft 365 Business gives 50 GB of storage, STRATO Mail 2 GB of storage.
- Your mail is stored in the UK data centres for UK tenants (London, Cardiff, Durham) with Microsoft 365 Business, and in Germany with STRATO Mail.
- The companies sit under different laws: Microsoft 365 Business in United States, STRATO Mail in Germany.
- Microsoft 365 Business (or its parent company) makes money from advertising; STRATO Mail doesn't.
Questions people ask
Is Microsoft 365 Business more private than STRATO Mail?
STRATO Mail scores 2.5 out of 5 for privacy and Microsoft 365 Business 1. STRATO Mail gives you a company that isn't funded by advertising.
Is Microsoft 365 Business cheaper than STRATO Mail?
STRATO Mail is cheaper. Its Mail Basic plan is €3 a month, against £5.40 per user a month, yearly, ex VAT for Microsoft 365 Business's Business Basic. Check the renewal price before you pay, as some first-year prices go up.
Can I use my own domain with Microsoft 365 Business or STRATO Mail?
Yes, both do. Microsoft 365 Business: Yes. STRATO Mail: Yes.
Where is my email stored with Microsoft 365 Business and STRATO Mail?
Microsoft 365 Business keeps it in the UK data centres for UK tenants (London, Cardiff, Durham). STRATO Mail keeps it in Germany.
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 · STRATO Mail news.
Alternatives to Microsoft 365 Business and STRATO Mail
- mailbox.org4.5 out of 5 overall
- Proton Mail for Business4.0 out of 5 overall
- Tuta Business4.0 out of 5 overall
Microsoft 365 Business vs mailbox.org · STRATO Mail vs mailbox.org · Microsoft 365 Business vs Proton Mail for Business · STRATO Mail vs Proton Mail for Business · Microsoft 365 Business vs Tuta Business · STRATO Mail vs Tuta Business
Switching between them
Moving to Microsoft 365 Business · Moving from Microsoft 365 Business. Or see all my switching guides.