Microsoft 365 Business vs Lark
Microsoft 365 Business wins on privacy, Lark wins on price and Microsoft 365 Business wins on features. Every fact below was checked on or before 22 October 2026.
Should you pick Microsoft 365 Business or Lark?
- Microsoft 365 Business suits you best if you want your mail kept in the UK data centres for UK tenants (London, Cardiff, Durham).
- Lark is the better pick if you want a company that isn't funded by advertising; to pay less: $6 a user a month, yearly; and a free plan to start on.
| Feature | Microsoft 365 Business | Lark |
|---|---|---|
| Overall | 2.5 | 2.0 |
| Privacy | 1.0 | 0.5 |
| Price | 2.5 | 3.0 |
| Features | 5.0 | 4.5 |
| Cheapest plan | Business Basic £5.40 per user a month, yearly, ex VAT | Basic $6 a user a month, yearly |
| Free plan | No | Yes, Starter (up to 20 users) |
| Storage | 50 GB | Not confirmed |
| Your own domain | ✓ Yes | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | United States | Singapore |
| Your data is kept in | UK data centres for UK tenants (London, Cardiff, Durham) | Not confirmed |
| Founded | 2011 | Unknown |
| Free trial | One month free on some plans | Free Starter plan |
| 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 |
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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); Lark's is Basic ($6 a user a month, yearly).
- For free, Microsoft 365 Business gives you no free plan, and Lark a free plan (Starter (up to 20 users)).
- Microsoft 365 Business comes with 50 GB of storage and Lark with storage not confirmed.
- Microsoft 365 Business keeps your mail in the UK data centres for UK tenants (London, Cardiff, Durham), while Lark keeps it in Not confirmed.
- Microsoft 365 Business is based in the United States and Lark in Singapore, so different privacy laws apply.
- Only Microsoft 365 Business is part of an advertising business.
Questions people ask
Which is more private, Microsoft 365 Business or Lark?
Microsoft 365 Business scores 1 out of 5 for privacy and Lark 0.5. Microsoft 365 Business gives you your mail kept in the UK data centres for UK tenants (London, Cardiff, Durham).
Which is cheaper, Microsoft 365 Business or Lark?
Lark is cheaper. Its Basic plan is $6 a user a month, yearly, against £5.40 per user a month, yearly, ex VAT for Microsoft 365 Business's Business Basic. Lark also has a free plan. Check the renewal price before you pay, as some first-year prices go up.
Do Microsoft 365 Business and Lark work with my own domain?
Yes, both do. Microsoft 365 Business: Yes. Lark: Yes.
Where do Microsoft 365 Business and Lark keep my email?
Microsoft 365 Business keeps it in the UK data centres for UK tenants (London, Cardiff, Durham). Lark keeps it in Not confirmed.
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 · Lark 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 · Lark vs mailbox.org · Microsoft 365 Business vs Proton Mail for Business · Lark vs Proton Mail for Business · Microsoft 365 Business vs Tuta Business · Lark vs Tuta Business
Switching between them
Moving to Microsoft 365 Business · Moving from Microsoft 365 Business. Or see all my switching guides.