Fastmail for Business vs IONOS Mail
In short: IONOS Mail wins on privacy, IONOS Mail wins on price, and Fastmail for Business wins on features. The full comparison is below, last checked 22 October 2026.
Should you pick Fastmail for Business or IONOS Mail?
- Fastmail for Business suits you best if you want more space for your mail: 50 GB and a calendar and contacts alongside your mail.
- IONOS Mail is the better pick if you want to pay less: About £1–£2 a month (not confirmed) and a provider that's been going since 1988.
| Feature | Fastmail for Business | IONOS Mail |
|---|---|---|
| Overall | 3.0 | 3.0 |
| Privacy | 2.0 | 2.5 |
| Price | 3.5 | 4.5 |
| Features | 5.0 | 3.0 |
| Cheapest plan | Standard $5 per user a month ($4.17 yearly) | Mail Basic About £1–£2 a month (not confirmed) |
| Free plan | No | No |
| Storage | 50 GB | 2 GB |
| Your own domain | ✓ Up to 100 | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Australia | Germany |
| Your data is kept in | EU (Amsterdam) for UK customers, with a US replica and US backups | UK data centre in Worcester; where email sits not confirmed |
| Founded | 1999 | 1988 |
| Free trial | 30 days free | Unknown |
| Funded by advertising | No | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | No |
| Aliases | Yes | Yes |
| Open-source apps | No | No |
| Sign up without ID | No | No |
| White label | No | Unknown |
| Reader offer | Offer 10% off your first year, plus a free trial of up to 30 days | None |
| Last checked | 22 October 2026 | 22 October 2026 |
Want to add another? Open this in the compare tool.
How Fastmail for Business and IONOS Mail differ
- On price: Fastmail for Business Standard at $5 per user a month ($4.17 yearly), against IONOS Mail Mail Basic at About £1–£2 a month (not confirmed).
- Fastmail for Business comes with 50 GB of storage and IONOS Mail with 2 GB of storage.
- Fastmail for Business keeps your mail in the EU (Amsterdam) for UK customers, with a US replica and US backups, while IONOS Mail keeps it in the UK data centre in Worcester; where email sits not confirmed.
- Fastmail for Business is based in Australia and IONOS Mail in Germany, so different privacy laws apply.
Fastmail for Business and IONOS Mail: your questions
Which is more private, Fastmail for Business or IONOS Mail?
IONOS Mail scores 2.5 out of 5 for privacy and Fastmail for Business 2.
Which is cheaper, Fastmail for Business or IONOS Mail?
IONOS Mail is cheaper. Its Mail Basic plan is About £1–£2 a month (not confirmed), against $5 per user a month ($4.17 yearly) for Fastmail for Business's Standard. Check the renewal price before you pay, as some first-year prices go up.
Do Fastmail for Business and IONOS Mail work with my own domain?
Yes, both do. Fastmail for Business: Up to 100. IONOS Mail: Yes.
Where do Fastmail for Business and IONOS Mail keep my email?
Fastmail for Business keeps it in the EU (Amsterdam) for UK customers, with a US replica and US backups. IONOS Mail keeps it in the UK data centre in Worcester; where email sits not confirmed.
Price changes and news
Neither price has changed since my first check on 22 October 2026.
The latest headlines: Fastmail for Business news · IONOS Mail news.
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Moving your email
Whichever you choose, the move follows the same steps. Pick your two providers for the steps.