Microsoft 365 Business
Business Basic from £5.40 per user a month, yearly, ex VAT. Based in United States.
Last checked 22 October 2026
How these stars are worked out. Commission never changes a star.
Key facts
- Cheapest plan
- Business Basic
£5.40 per user a month, yearly, ex VAT - Free plan
- No
- Storage
- 50 GB
- Your own domain
- ✓ Yes
- End-to-end encryption
- No
- Company based in
- United States
- Your data is kept in
- UK data centres for UK tenants (London, Cardiff, Durham)
- Founded
- 2011
- Free trial
- One month free on some plans
- Funded by advertising
- Yes, or its parent company is
- Works in any mail app
- ✓ IMAP and SMTP
- Calendar and contacts
- ✓ Yes
- Aliases
- Yes
- Open-source apps
- No
- Sign up without ID
- No
- White label
- No
- Reader offer
- None
UK price changed in July 2026; sources give £4.60–£5.75. 50 GB mailbox not confirmed
Not sure what something means? See my email glossary.
Trust score
Still being checked
My Trust score counts only things Microsoft 365 Business controls: reliability, abuse handling, email security, account security, transparency, fair dealing and support. It doesn't change the stars above. I'll show a score once I've had a week of my own checks. So far 1.4 points are confirmed. How it's worked out
Reliability 0 of 1
- Website uptime over 30 daysFrom my hourly checks. 99% or more scores in full, 98% scores 0.75, 97% scores 0.5 and 95% scores 0.25. Needs a week of checks.Not checked yet: 0/1
Abuse and reputation 0 of 0.75
- Mail servers kept off blocklists for 30 daysFrom my daily checks of the free blocklists. A listing only counts if I see it on two separate days.Not checked yet: 0/0.5
- Publishes a way to report abuseNot checked yet: 0/0.25
Email security on its own domain 0.6 of 1
- DMARC set to rejectFrom my DNS checks of the domain its mail comes from.Yes: 0.4/0.4
- MTA-STS, so mail to it can't be quietly downgradedFrom my DNS checks.Yes: 0.2/0.2
- DNSSEC on its domainFrom my DNS checks.No: 0/0.2
- Website on HTTPS with HSTSFrom my website checks.No: 0/0.2
Account security 0.5 of 0.5
- Two-step sign-inYes: 0.25/0.25
- PasskeysYes: 0.25/0.25
Transparency 0 of 0.75
- A security contact (security.txt or a security page)Not checked yet: 0/0.25
- A transparency report, or a published policy on government requestsNot checked yet: 0/0.25
- A published security audit, or a bug bountyNot checked yet: 0/0.25
Fair dealing 0.25 of 0.5
- You can export all your mailYes: 0.25/0.25
- You can cancel onlineNot checked yet: 0/0.25
Support 0 of 0.5
- A way to reach a person, listed on its websiteNot checked yet: 0/0.25
- A public status pageNot checked yet: 0/0.25
Something missing or wrong? Suggest an edit with a link to the provider's own page.
Plans
4 plans
Exchange Online (Plan 1)
- Storage
- 50 GB mailbox
- Also includes
- Email, calendar and contacts only (no Office apps or OneDrive)
Business Basic
- Storage
- 50 GB mailbox and 1 TB of OneDrive per person
- People
- Up to 300
- Also includes
- Web and mobile Office apps, Teams
Business Standard
- Storage
- 50 GB mailbox and 1 TB of OneDrive per person
- People
- Up to 300
- Also includes
- Everything in Basic, plus desktop Office apps
Prices as listed when I checked, before any tax. Dollar and euro prices are what the provider charges. Tap a plan to see what's included.
Before you sign up
Not checked yet
- Taking your email with you
- Unknown Suggest an edit
- How to cancel
- Unknown Suggest an edit
- Refunds
- Unknown Suggest an edit
- Minimum term
- Unknown Suggest an edit
- Price when it renews
- Unknown Suggest an edit
- After you close your account
- Unknown Suggest an edit
- Getting help
- Unknown Suggest an edit
Taken from Microsoft 365 Business's own pages. Policies change, so check their page before you pay.
Reviews
App Store 4.5 · Google Play 4.3
App Store (UK)
4.5 out of 5
From 992 ratings, Microsoft 365 Admin, iPhone app, checked 31 October 2026
See the app on the App Store ↗Google Play (UK)
4.3 out of 5
From 10,710,108 ratings, Microsoft Outlook, Android app, checked 31 October 2026
See the app on Google Play ↗
These are other people's ratings, taken from each site on the date shown. They don't change my stars, which come only from the facts.
From members
No member reviews of Microsoft 365 Business yet. If you've used it, yours could be the first.
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Write a review of Microsoft 365 Business
Features
14 of 22 offered, 1 still to check
- Your own domain✓ Yes
- Works in any mail app (IMAP)✓ Yes
- Calendar and contacts✓ Yes
- Open sourceNo
- White label (resell as your own)No
- Two-step sign-in✓ Yes
- Passkeys✓ Yes
- PGP encryptionNo
- Password-protected email to anyoneUnknown Suggest an edit
- Catch-all addressNo
- Filters and rules✓ Yes
- Sieve filtersNo
- Auto-reply✓ Yes
- Scheduled send✓ Yes
- Undo send✓ Yes
- Import from another provider✓ Yes
- Mobile apps✓ Yes
- Desktop app✓ Yes
- POP3✓ Yes
- CalDAV and CardDAV syncNo
- JMAPNo
- Tor (onion) addressNo
- Pay with cash or cryptoNo
- Export all your mail✓ Yes
- API✓ Yes
- AI features✓ Yes
- Single sign-on (SSO)✓ Yes
Policies and contacts
0 of 5 found
- Privacy policy
- Unknown Suggest an edit
- Acceptable use policy
- Unknown Suggest an edit
- Terms of service
- Unknown Suggest an edit
- Report abuse
- Unknown Suggest an edit
- Contact
- Unknown Suggest an edit
Track record
No known breaches
- Known data breaches
- ✓ None on record for microsoft.com
From public sources, last read on 31 October 2026: breaches from Have I Been Pwned (CC BY 4.0), which lists breaches of the provider's own site, not of every account that uses it; incidents as the provider reports them. None of this changes my stars.
Company and servers
Founded, owner, servers, uptime and blocklists
- Founded
- 2011
- Domain first registered
- 1991 (microsoft.com)
- Website hosted in
- South Africa (Microsoft Corporation)
Only the website. Where your mail is kept is under Your data is kept in. - Mail servers
- United States (Microsoft Corporation)
microsoft-com.mail.protection.outlook.com - Mail security records
- SPF strict (-all) · DMARC reject · MTA-STS ✓ · TLS reporting ✓
- Blocklists
- ✓ Not listed on the 12 lists I check, for 4 of its mail servers
- Name servers run by
- Microsoft Azure
- DNSSEC
- Not signed
- IPv6
- ✓ website and mail servers
- Home page answered in
- Unknown Suggest an edit
My automatic checks last ran on 31 October 2026. Server countries come from their IP addresses (IP geolocation by DB-IP), and big providers often run servers in many countries. Blocklists are the free lists that answer public look-ups.
Microsoft 365 Business home page
Screenshot
News
Latest headlines
- Loading the latest news…
All Microsoft 365 Business news · News by RSS
From Microsoft 365 Business's own blog and social accounts, and from tech and security news sites. I show the headline and its first few lines, and link to the full story where it was published.
Price history
3 prices since 1 June 2026
Cheapest plan per month, in pounds. Prices charged in dollars or euros are converted at a rough rate. Every change I find is added here with its date.
- 22 October 2026 £5.40 per user a month, yearly, ex VAT, when I checked
- 27 July 2026 £5.40 (UK price change from 1 July 2026)
- 1 June 2026 £4.90
Sources
2 sources
Similar providers
Suggest an edit
Spotted something wrong, out of date or missing about Microsoft 365 Business? Members can send me a correction, ideally with a link to the provider's own page. I check every one before anything changes.
Facts are checked against Microsoft 365 Business's own pages and dated. Offer links are referral links: I may earn a commission, and it never changes the stars or the order. How I make money