Microsoft 365 Business vs 20i
20i wins on privacy, Microsoft 365 Business wins on price and Microsoft 365 Business wins on features. Every fact below was checked on or before 25 October 2026.
Should you pick Microsoft 365 Business or 20i?
- Choose Microsoft 365 Business if you want more space for your mail: 50 GB.
- 20i suits you best if you want email from a company that doesn't make money from adverts.
| Feature | Microsoft 365 Business | 20i |
|---|---|---|
| Overall | 2.5 | Not rated |
| Privacy | 1.0 | 2.5 |
| Price | 2.5 | Not rated |
| Features | 5.0 | 4.5 |
| Cheapest plan | Business Basic £5.40 per user a month, yearly, ex VAT | Email hosting Not confirmed |
| Free plan | No | No |
| Storage | 50 GB | 10 GB |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | United States | United Kingdom |
| Your data is kept in | UK data centres for UK tenants (London, Cardiff, Durham) | United Kingdom |
| Founded | 2011 | Unknown |
| Free trial | One month free on some plans | Unknown |
| 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 | ✓ Yes |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 25 October 2026 |
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Where they differ
- Microsoft 365 Business's cheapest plan is Business Basic (£5.40 per user a month, yearly, ex VAT); 20i's is Email hosting (Not confirmed).
- Space: Microsoft 365 Business gives 50 GB of storage, 20i 10 GB of storage.
- Your mail is stored in the UK data centres for UK tenants (London, Cardiff, Durham) with Microsoft 365 Business, and in the United Kingdom with 20i.
- The companies sit under different laws: Microsoft 365 Business in United States, 20i in United Kingdom.
- Microsoft 365 Business (or its parent company) makes money from advertising; 20i doesn't.
Microsoft 365 Business and 20i: your questions
Is Microsoft 365 Business more private than 20i?
20i scores 2.5 out of 5 for privacy and Microsoft 365 Business 1. 20i gives you email from a company that doesn't make money from adverts.
Can I use my own domain with Microsoft 365 Business or 20i?
Yes, both do. Microsoft 365 Business: Yes. 20i: Yes.
Where is my email stored with Microsoft 365 Business and 20i?
Microsoft 365 Business keeps it in the UK data centres for UK tenants (London, Cardiff, Durham). 20i keeps it in the United Kingdom.
Prices and the latest 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 · 20i news.
Not sold on either? Try these
- 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 · 20i vs mailbox.org · Microsoft 365 Business vs Proton Mail for Business · 20i vs Proton Mail for Business · Microsoft 365 Business vs Tuta Business · 20i vs Tuta Business
Moving your email
Moving to Microsoft 365 Business · Moving from Microsoft 365 Business. Or see all my switching guides.