Microsoft 365 Business vs mail.com
In short: Microsoft 365 Business wins on privacy, mail.com wins on price, and Microsoft 365 Business wins on features. The full comparison is below, last checked 25 October 2026.
Should you pick Microsoft 365 Business or mail.com?
- Microsoft 365 Business suits you best if you want your email to stay in the UK data centres for UK tenants (London, Cardiff, Durham) and an address on your own domain.
- mail.com suits you best if you want a mailbox that costs nothing; a free plan to start on; and 65 GB of storage.
| Feature | Microsoft 365 Business | mail.com |
|---|---|---|
| Overall | 2.5 | 2.5 |
| Privacy | 1.0 | 0.0 |
| 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 |
| 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 | United States |
| Your data is kept in | UK data centres for UK tenants (London, Cardiff, Durham) | United States |
| Founded | 2011 | 1995 |
| 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 |
Want to add another? Open this in the compare tool.
The key differences
- Cheapest plans: Microsoft 365 Business Business Basic, £5.40 per user a month, yearly, ex VAT. mail.com Free, Free.
- For free, Microsoft 365 Business gives you no free plan, and mail.com a free plan (with adverts).
- Microsoft 365 Business comes with 50 GB of storage and mail.com with 65 GB of storage.
- Data location: UK data centres for UK tenants (London, Cardiff, Durham) for Microsoft 365 Business, United States for mail.com.
- Microsoft 365 Business lets you bring your own domain name; mail.com doesn't.
- For extra addresses, Microsoft 365 Business has yes and mail.com has up to 10 addresses.
Common questions
Which is more private, Microsoft 365 Business or mail.com?
Microsoft 365 Business scores 1 out of 5 for privacy and mail.com 0. Microsoft 365 Business gives you your email to stay in the UK data centres for UK tenants (London, Cardiff, Durham).
Which is cheaper, Microsoft 365 Business or mail.com?
mail.com costs nothing to start (Free). Microsoft 365 Business's cheapest plan, Business Basic, is £5.40 per user a month, yearly, ex VAT.
Do Microsoft 365 Business and mail.com work with my own domain?
Only Microsoft 365 Business does (Yes). With mail.com your address stays on its own domain.
Where do Microsoft 365 Business and mail.com keep my email?
Microsoft 365 Business keeps it in the UK data centres for UK tenants (London, Cardiff, Durham). mail.com keeps it in the United States.
Recent price changes
- 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 · mail.com news.
Not sold on either? Try these
Microsoft 365 Business vs mailbox.org · mail.com vs mailbox.org · Microsoft 365 Business vs Posteo · mail.com vs Posteo · Microsoft 365 Business vs Proton Mail · mail.com vs Proton Mail
Moving your email
Moving to Microsoft 365 Business · Moving from Microsoft 365 Business. Or see all my switching guides.