Microsoft 365 Business vs Yahoo Mail
Microsoft 365 Business wins on privacy, Yahoo Mail wins on price and Microsoft 365 Business wins on features. Every fact below was checked on or before 25 October 2026.
Microsoft 365 Business or Yahoo Mail: which should you choose?
- Microsoft 365 Business suits you best if you want your email to stay in the UK data centres for UK tenants (London, Cardiff, Durham); to use your own domain, like you@yourname.co.uk; and more space for your mail: 50 GB.
- Yahoo Mail suits you best if you want a mailbox that costs nothing; to try it free first; and a company with a longer track record (since 1997).
| Feature | Microsoft 365 Business | Yahoo Mail |
|---|---|---|
| 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 (Mail Plus ad-free, 200 GB) Free; Plus £4.99 a month (2020 price) |
| Free plan | No | Yes, 20 GB |
| Storage | 50 GB | 20 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 and worldwide |
| 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 | Yes |
| 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.
How Microsoft 365 Business and Yahoo Mail differ
- On price: Microsoft 365 Business Business Basic at £5.40 per user a month, yearly, ex VAT, against Yahoo Mail Free (Mail Plus ad-free, 200 GB) at Free; Plus £4.99 a month (2020 price).
- For free, Microsoft 365 Business gives you no free plan, and Yahoo Mail a free plan (20 GB).
- Microsoft 365 Business comes with 50 GB of storage and Yahoo Mail with 20 GB of storage.
- Data location: UK data centres for UK tenants (London, Cardiff, Durham) for Microsoft 365 Business, United States and worldwide for Yahoo Mail.
- Microsoft 365 Business lets you bring your own domain name; Yahoo Mail doesn't.
Microsoft 365 Business and Yahoo Mail: your questions
Which is more private, Microsoft 365 Business or Yahoo Mail?
Microsoft 365 Business scores 1 out of 5 for privacy and Yahoo Mail 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 Yahoo Mail?
Yahoo Mail costs nothing to start (Free; Plus £4.99 a month (2020 price)). Microsoft 365 Business's cheapest plan, Business Basic, is £5.40 per user a month, yearly, ex VAT.
Do Microsoft 365 Business and Yahoo Mail work with my own domain?
Only Microsoft 365 Business does (Yes). With Yahoo Mail your address stays on its own domain.
Where do Microsoft 365 Business and Yahoo Mail keep my email?
Microsoft 365 Business keeps it in the UK data centres for UK tenants (London, Cardiff, Durham). Yahoo Mail keeps it in the United States and worldwide.
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 · Yahoo Mail news.
Also worth a look
Microsoft 365 Business vs mailbox.org · Yahoo Mail vs mailbox.org · Microsoft 365 Business vs Posteo · Yahoo Mail vs Posteo · Microsoft 365 Business vs Proton Mail · Yahoo Mail vs Proton Mail
How to switch
Moving to Microsoft 365 Business · Moving from Microsoft 365 Business. Or see all my switching guides.