Fastmail for Business vs SimpleLogin
On privacy it's SimpleLogin. On price it's SimpleLogin. On features it's Fastmail for Business. Here's everything side by side, last checked 25 October 2026.
Should you pick Fastmail for Business or SimpleLogin?
- Go for Fastmail for Business if you'd like 50 GB of storage; to read your mail in any app, such as Apple Mail, Outlook or Thunderbird; and a calendar and contacts alongside your mail.
- SimpleLogin is the better pick if you want to pay less: $36 a year (with Proton Pass); a free plan before you pay anything; and open-source apps anyone can check.
| Feature | Fastmail for Business | SimpleLogin |
|---|---|---|
| Overall | 3.0 | 3.5 |
| Privacy | 2.0 | 3.0 |
| Price | 3.5 | 4.0 |
| Features | 5.0 | Not rated |
| Cheapest plan | Standard $5 per user a month ($4.17 yearly) | Premium $36 a year (with Proton Pass) |
| Free plan | No | Yes, 10 aliases |
| Storage | 50 GB | Forwards only |
| Your own domain | ✓ Up to 100 | ✓ Yes |
| End-to-end encryption | No | No |
| Company based in | Australia | Switzerland (Proton) |
| Your data is kept in | EU (Amsterdam) for UK customers, with a US replica and US backups | EU |
| Founded | 1999 | 2019 |
| Free trial | 30 days free | Free plan |
| Funded by advertising | No | No |
| Works in any mail app | ✓ IMAP and SMTP | No, its own apps only |
| Calendar and contacts | ✓ Yes | No |
| Aliases | Yes | Unlimited aliases |
| Open-source apps | No | ✓ Yes |
| Sign up without ID | No | No |
| White label | No | No |
| Reader offer | Offer 10% off your first year, plus a free trial of up to 30 days | None |
| Last checked | 22 October 2026 | 25 October 2026 |
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How Fastmail for Business and SimpleLogin differ
- On price: Fastmail for Business Standard at $5 per user a month ($4.17 yearly), against SimpleLogin Premium at $36 a year (with Proton Pass).
- Fastmail for Business has no free plan; SimpleLogin has a free plan (10 aliases).
- Space: Fastmail for Business gives 50 GB of storage, SimpleLogin no storage, as it forwards mail on.
- Data location: EU (Amsterdam) for UK customers, with a US replica and US backups for Fastmail for Business, EU for SimpleLogin.
- The companies sit under different laws: Fastmail for Business in Australia, SimpleLogin in Switzerland (Proton).
- Mail apps: Fastmail for Business works in any mail app over IMAP; SimpleLogin only works in its own apps.
- Aliases: Fastmail for Business offers yes, SimpleLogin unlimited aliases.
Fastmail for Business and SimpleLogin: your questions
Is Fastmail for Business more private than SimpleLogin?
SimpleLogin scores 3 out of 5 for privacy and Fastmail for Business 2. SimpleLogin gives you open-source apps anyone can check.
Is Fastmail for Business cheaper than SimpleLogin?
SimpleLogin is cheaper. Its Premium plan is $36 a year (with Proton Pass), against $5 per user a month ($4.17 yearly) for Fastmail for Business's Standard. SimpleLogin 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 Fastmail for Business or SimpleLogin?
Yes, both do. Fastmail for Business: Up to 100. SimpleLogin: Yes.
Where is my email stored with Fastmail for Business and SimpleLogin?
Fastmail for Business keeps it in the EU (Amsterdam) for UK customers, with a US replica and US backups. SimpleLogin keeps it in the EU.
Can I use Fastmail for Business and SimpleLogin in Apple Mail or Outlook?
Fastmail for Business works in any mail app over IMAP. SimpleLogin only works in its own apps.
Price changes and news
No price changes for either since 22 October 2026. I check regularly and add any change here with its date.
The latest headlines: Fastmail for Business news · SimpleLogin news.
Not sold on either? Try these
Fastmail for Business vs mailbox.org · SimpleLogin vs mailbox.org · Fastmail for Business vs Posteo · SimpleLogin vs Posteo · Fastmail for Business vs Proton Mail · SimpleLogin vs Proton Mail
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