mailbox.org vs Firefox Relay
Mailbox.org wins on privacy, Firefox Relay wins on price and mailbox.org wins on features. Every fact below was checked on or before 25 October 2026.
mailbox.org or Firefox Relay: which should you choose?
- mailbox.org is the better pick if you want your mail kept in Germany; an address on your own domain; and 20 GB of storage.
- Firefox Relay is the better pick if you want the lower price ($0.99 a month) and to try it free first.
| Feature | mailbox.org | Firefox Relay |
|---|---|---|
| Overall | 4.5 | 2.5 |
| Privacy | 4.5 | 1.0 |
| Price | 4.0 | 5.0 |
| Features | 5.0 | Not rated |
| Cheapest plan | Standard €3 a month, yearly (from summer 2026) | Premium $0.99 a month |
| Free plan | No (30-day trial) | Yes, 5 aliases |
| Storage | 20 GB | Forwards only |
| Your own domain | ✓ Yes | Own subdomain only |
| End-to-end encryption | Optional (PGP or encrypted storage) | No |
| Company based in | Germany | United States (Mozilla) |
| Your data is kept in | Germany | United States |
| Founded | 2014 | 2020 |
| 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 | ✓ Yes | ✓ Yes |
| Sign up without ID | ✓ Yes | No |
| White label | No | No |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 25 October 2026 |
Want to add another? Open this in the compare tool.
Where they differ
- On price: mailbox.org Standard at €3 a month, yearly (from summer 2026), against Firefox Relay Premium at $0.99 a month.
- For free, mailbox.org gives you no free plan, and Firefox Relay a free plan (5 aliases).
- mailbox.org comes with 20 GB of storage and Firefox Relay with no storage, as it forwards mail on.
- mailbox.org keeps your mail in Germany, while Firefox Relay keeps it in the United States.
- mailbox.org is based in Germany and Firefox Relay in the United States (Mozilla), so different privacy laws apply.
- mailbox.org offers optional encryption (PGP or encrypted storage); Firefox Relay doesn't encrypt mail end to end.
- mailbox.org lets you bring your own domain name; Firefox Relay doesn't.
- mailbox.org works in any mail app over IMAP, and Firefox Relay only works in its own apps.
- For extra addresses, mailbox.org has yes and Firefox Relay has unlimited aliases.
mailbox.org and Firefox Relay: your questions
Which is more private, mailbox.org or Firefox Relay?
mailbox.org scores 4.5 out of 5 for privacy and Firefox Relay 1. mailbox.org gives you your mail kept in Germany and to sign up without proving who you are.
Which is cheaper, mailbox.org or Firefox Relay?
Firefox Relay is cheaper. Its Premium plan is $0.99 a month, against €3 a month, yearly (from summer 2026) for mailbox.org's Standard. Firefox Relay also has a free plan. Check the renewal price before you pay, as some first-year prices go up.
Do mailbox.org and Firefox Relay work with my own domain?
Only mailbox.org does (Yes). With Firefox Relay your address stays on its own domain.
Where do mailbox.org and Firefox Relay keep my email?
mailbox.org keeps it in Germany. Firefox Relay keeps it in the United States.
Do mailbox.org and Firefox Relay work in other mail apps?
mailbox.org works in any mail app over IMAP. Firefox Relay only works in its own apps.
Price changes and 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 · Firefox Relay news.
Also worth a look
mailbox.org vs Posteo · Firefox Relay vs Posteo · mailbox.org vs Proton Mail · Firefox Relay vs Proton Mail · mailbox.org vs Tuta · Firefox Relay vs Tuta
Moving your email
Moving to mailbox.org · Moving from mailbox.org. Or see all my switching guides.