mailbox.org vs Posteo
On privacy it's a tie. On price it's Posteo. On features it's mailbox.org. Here's everything side by side, last checked 22 October 2026.
Which should you choose?
- mailbox.org is the better pick if you want an address on your own domain and more room (20 GB, against 4 GB).
- Posteo is the better pick if you want the lower price (€1 a month) and a company with a longer track record (since 2009).
| Feature | mailbox.org | Posteo |
|---|---|---|
| Overall | 4.5 | 4.5 |
| Privacy | 4.5 | 4.5 |
| Price | 4.0 | 5.0 |
| Features | 5.0 | 3.0 |
| Cheapest plan | Standard €3 a month, yearly (from summer 2026) | Posteo €1 a month |
| Free plan | No (30-day trial) | No |
| Storage | 20 GB | 4 GB |
| Your own domain | ✓ Yes | No |
| End-to-end encryption | Optional (PGP or encrypted storage) | Optional (PGP or encrypted storage) |
| Company based in | Germany | Germany |
| Your data is kept in | Germany | Germany |
| Founded | 2014 | 2009 |
| Free trial | 30 days free | No, €1 a month from the start |
| Funded by advertising | No | No |
| Works in any mail app | ✓ IMAP and SMTP | ✓ IMAP and SMTP |
| Calendar and contacts | ✓ Yes | ✓ Yes |
| Aliases | Yes | Yes (posteo.de only) |
| Open-source apps | ✓ Yes | ✓ Yes |
| Sign up without ID | ✓ Yes | ✓ Yes |
| White label | No | No |
| Reader offer | None | None |
| Last checked | 22 October 2026 | 22 October 2026 |
Want to add another? Open this in the compare tool.
The key differences
- mailbox.org's cheapest plan is Standard (€3 a month, yearly (from summer 2026)); Posteo's is Posteo (€1 a month).
- For free, mailbox.org gives you no free plan, and Posteo no free plan.
- mailbox.org comes with 20 GB of storage and Posteo with 4 GB of storage.
- mailbox.org lets you bring your own domain name; Posteo doesn't.
- For extra addresses, mailbox.org has yes and Posteo has yes (posteo.de only).
Questions people ask
Which is more private, mailbox.org or Posteo?
They score the same for privacy: 4.5 out of 5 each. The differences are in the details, such as where your mail is kept (Germany for mailbox.org, Germany for Posteo).
Which is cheaper, mailbox.org or Posteo?
Posteo is cheaper. Its Posteo plan is €1 a month, against €3 a month, yearly (from summer 2026) for mailbox.org's Standard. Check the renewal price before you pay, as some first-year prices go up.
Do mailbox.org and Posteo work with my own domain?
Only mailbox.org does (Yes). With Posteo your address stays on its own domain.
Where do mailbox.org and Posteo keep my email?
Both keep it in Germany.
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 · Posteo news.
Alternatives to mailbox.org and Posteo
mailbox.org vs Proton Mail · Posteo vs Proton Mail · mailbox.org vs Tuta · Posteo vs Tuta · mailbox.org vs addy.io · Posteo vs addy.io
Switching between them
Ready to move? My step-by-step guides cover your mail, contacts, forwarding and your own domain: mailbox.org to Posteo · Posteo to mailbox.org.