Last checked: 2026-10-16
Three business email providers, compared on per-user pricing, storage, custom domains and trials.
All figures below were read from each provider's own published pricing pages on the check date shown. Short-term promotions are excluded.
| Feature | Google Workspace | Microsoft 365 | Fastmail |
|---|---|---|---|
| Entry price per user | Business Starter £5.90 per user/month, annual commitment, ex tax | Business Basic £5.40 per user/month, paid yearly, ex VAT | Basic £3.60 per user/month (£2.70 per user/month billed yearly) |
| Next tier per user | Business Standard £11.80 per user/month, annual commitment, ex tax | Business Standard with Copilot £18.10 per user/month, paid yearly, ex VAT | Standard £5.40 per user/month (£4.50 per user/month billed yearly) |
| Storage on entry plan | 30 GB pooled storage per user on Starter; 2 TB per user on Standard | 1 TB of cloud storage per user | 6 GB total storage per user on Basic |
| Custom-domain email | Yes — secure custom business email (you@your-company.com) | Yes — custom business email (you@yourbusiness.com) | Yes — custom addresses like you@yourbusiness.com |
| Free trial | 14-day trial | Not stated on the page we checked | Try free for up to 30 days |
| User cap on business plans | Maximum 300 users on Starter, Standard and Plus plans | Up to 300 users | Not stated on the page we checked |
| Provider link | Visit Google Workspace | Visit Microsoft 365 | Visit Fastmail |
Our pick if you want email plus generous storage and video meetings in one per-user price — Starter undercuts Microsoft's equivalent tier.
Best if your work already lives in Word, Excel and Teams; Business Basic is the cheapest way into the Microsoft ecosystem with 1 TB storage.
Best for email-only needs: the cheapest per-user pricing here, a 30-day trial, and no office suite you did not ask for.
Microsoft's business suite: Outlook, Teams, Office apps and OneDrive.
Prices below exclude VAT/tax unless stated. If you only need email and calendars, the lighter plans are far cheaper than the full office suites.