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Microsoft 365 Business vs eclipso

On privacy it's eclipso. On price it's eclipso. On features it's Microsoft 365 Business. Here's everything side by side, last checked 25 October 2026.

Microsoft 365 Business or eclipso: which should you choose?

  • Go for Microsoft 365 Business if you'd like to use your own domain, like you@yourname.co.uk and 50 GB of storage.
  • eclipso suits you best if you want email from a company that doesn't make money from adverts; a cheaper plan, at €1.49 a month; and a free plan before you pay anything.
FeatureMicrosoft 365 Businesseclipso
Overall2.53.5
Privacy1.02.5
Price2.54.5
Features5.04.0
Cheapest planBusiness Basic
£5.40 per user a month, yearly, ex VAT
Connect
€1.49 a month
Free planNoYes, 4 GB
Storage50 GB20 GB
Your own domain✓ YesOn paid plans
End-to-end encryptionNoNo
Company based in United States Germany
Your data is kept in UK data centres for UK tenants (London, Cardiff, Durham) Germany
Founded2011Unknown
Free trialOne month free on some plansFree plan (Freemail)
Funded by advertisingYes, or its parent company isNo
Works in any mail app✓ IMAP and SMTP✓ IMAP and SMTP
Calendar and contacts✓ Yes✓ Yes
AliasesYesYes
Open-source appsNoNo
Sign up without IDNoNo
White labelNoUnknown
Reader offerNoneNone
Last checked22 October 202625 October 2026

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Where they differ

  • On price: Microsoft 365 Business Business Basic at £5.40 per user a month, yearly, ex VAT, against eclipso Connect at €1.49 a month.
  • Microsoft 365 Business has no free plan; eclipso has a free plan (4 GB).
  • Space: Microsoft 365 Business gives 50 GB of storage, eclipso 20 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 eclipso.
  • The companies sit under different laws: Microsoft 365 Business in United States, eclipso in Germany.
  • You can use your own domain with Microsoft 365 Business, but not with eclipso.
  • Microsoft 365 Business (or its parent company) makes money from advertising; eclipso doesn't.

Common questions

Is Microsoft 365 Business more private than eclipso?

eclipso scores 2.5 out of 5 for privacy and Microsoft 365 Business 1. eclipso gives you email from a company that doesn't make money from adverts.

Is Microsoft 365 Business cheaper than eclipso?

eclipso is cheaper. Its Connect plan is €1.49 a month, against £5.40 per user a month, yearly, ex VAT for Microsoft 365 Business's Business Basic. eclipso also has a free plan. 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 eclipso?

Only Microsoft 365 Business does (Yes). With eclipso your address stays on its own domain.

Where is my email stored with Microsoft 365 Business and eclipso?

Microsoft 365 Business keeps it in the UK data centres for UK tenants (London, Cardiff, Durham). eclipso keeps it in Germany.

Prices and the latest news

  • 22 October 2026 eclipso: Free; paid plans not confirmed, when I checked
  • 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 · eclipso news.

Alternatives to Microsoft 365 Business and eclipso

Microsoft 365 Business vs mailbox.org · eclipso vs mailbox.org · Microsoft 365 Business vs Posteo · eclipso vs Posteo · Microsoft 365 Business vs Proton Mail · eclipso vs Proton Mail

Switching between them

Moving to Microsoft 365 Business · Moving from Microsoft 365 Business. Or see all my switching guides.

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