mailbox.org vs Fastmail for Business
On privacy it's mailbox.org. On price it's mailbox.org. On features it's a tie. Here's everything side by side, last checked 22 October 2026.
Which should you choose?
- mailbox.org is the better pick if you want a cheaper plan, at €3 a month, yearly (from summer 2026); extras such as PGP encryption as well as password-protected email to anyone; and open-source apps.
- Fastmail for Business suits you best if you want more space for your mail: 50 GB and a company with a longer track record (since 1999).
| Feature | mailbox.org | Fastmail for Business |
|---|---|---|
| Overall | 4.5 | 3.0 |
| Privacy | 4.5 | 2.0 |
| Price | 4.0 | 3.5 |
| Features | 5.0 | 5.0 |
| Cheapest plan | Standard €3 a month, yearly (from summer 2026) | Standard $5 per user a month ($4.17 yearly) |
| Free plan | No (30-day trial) | No |
| Storage | 20 GB | 50 GB |
| Your own domain | ✓ Yes | ✓ Up to 100 |
| End-to-end encryption | Optional (PGP or encrypted storage) | No |
| Company based in | Germany | Australia |
| Your data is kept in | Germany | EU (Amsterdam) for UK customers, with a US replica and US backups |
| Founded | 2014 | 1999 |
| Free trial | 30 days free | 30 days free |
| Funded by advertising | No | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes | Yes |
| Open-source apps | ✓ Yes | No |
| Sign up without ID | ✓ Yes | No |
| White label | No | No |
| Reader offer | None | Offer 10% off your first year, plus a free trial of up to 30 days |
| Last checked | 22 October 2026 | 22 October 2026 |
Want to add another? Open this in the compare tool.
How mailbox.org and Fastmail for Business differ
- On price: mailbox.org Standard at €3 a month, yearly (from summer 2026), against Fastmail for Business Standard at $5 per user a month ($4.17 yearly).
- For free, mailbox.org gives you no free plan, and Fastmail for Business no free plan.
- mailbox.org comes with 20 GB of storage and Fastmail for Business with 50 GB of storage.
- mailbox.org keeps your mail in Germany, while Fastmail for Business keeps it in the EU (Amsterdam) for UK customers, with a US replica and US backups.
- mailbox.org is based in Germany and Fastmail for Business in Australia, so different privacy laws apply.
- mailbox.org offers optional encryption (PGP or encrypted storage); Fastmail for Business doesn't encrypt mail end to end.
mailbox.org and Fastmail for Business: your questions
Which is more private, mailbox.org or Fastmail for Business?
mailbox.org scores 4.5 out of 5 for privacy and Fastmail for Business 2. mailbox.org gives you open-source apps and to sign up without proving who you are.
Which is cheaper, mailbox.org or Fastmail for Business?
mailbox.org is cheaper. Its Standard plan is €3 a month, yearly (from summer 2026), 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 mailbox.org and Fastmail for Business work with my own domain?
Yes, both do. mailbox.org: Yes. Fastmail for Business: Up to 100.
Where do mailbox.org and Fastmail for Business keep my email?
mailbox.org keeps it in Germany. Fastmail for Business keeps it in the EU (Amsterdam) for UK customers, with a US replica and US backups.
Prices and the latest news
- 1 September 2026 mailbox.org: €3.00 (announced 15 July 2026)
- 1 June 2026 mailbox.org: €2.50
The latest headlines: mailbox.org news · Fastmail for Business news.
Not sold on either? Try these
mailbox.org vs Posteo · Fastmail for Business vs Posteo · mailbox.org vs Proton Mail · Fastmail for Business vs Proton Mail · mailbox.org vs Tuta · Fastmail for Business vs Tuta
Switching between them
Moving to mailbox.org · Moving from mailbox.org. Or see all my switching guides.