mailbox.org: verified facts and rating
Checked 2026-11-03
Score breakdown
95% backed by facts · How we rank
mailbox.org against the market
The dot is the company, the line is the median of all companies in this ranking.
Cheapest paid plan per month (monthly billing)$4.49$6.00$4.49 · median $4.99
mailbox.org strengths and weaknesses
Pros
- End-to-end encryption is built in
- You can use your own domain ([email protected])
- Security checked by an independent audit or certification
- Works with standard mail apps via IMAP/SMTP
Cons
- No free plan
All facts
| Fact | Value | Source | Checked |
|---|---|---|---|
| Built-in end-to-end encryption | Yes With PGP and S/MIME in our webmail client, your emails are always encrypted securely from end to end. | mailbox.org | 2026-11-03 |
| Independent audit or security certification | Yes the BSI C5 certificate and ISO 27001 certification confirm our high security standards | mailbox.org | 2026-11-03 |
| Open source apps | Not verified | — | |
| Hardware key sign-in (FIDO2/U2F/YubiKey) | Yes mailbox offers the option to log in securely using a one-time password (OTP). This involves a small device called a YubiKey, which resembles a USB stick. | kb.mailbox.org | 2026-11-03 |
| Cheapest paid plan per month (monthly billing) | $4.49 Standard € 4 per month Try it for free ✉ 20 GB Mail storage · € 4 when paying monthly · ECB 1 EUR = 1.1216 USD, 2026-11-02 | mailbox.org | 2026-11-03 |
| Free plan | No Start your free 30-day trial now | mailbox.org | 2026-11-03 |
| Mail storage on the free plan (GB) | 0 Start your free 30-day trial now | mailbox.org | 2026-11-03 |
| Your own domain | Yes Custom domain names can be used | mailbox.org | 2026-11-03 |
| Mail storage on the cheapest paid plan (GB) | 20 Standard € 4 per month Try it for free ✉ 20 GB Mail storage | mailbox.org | 2026-11-03 |
| IMAP/SMTP access | Yes Easy setup with IMAP, POP 3 and SMTP in the email software of your choice | mailbox.org | 2026-11-03 |
| Aliases and extra addresses | Yes 25 aliases @mailbox.org | mailbox.org | 2026-11-03 |
| Founded | 2014 In 2024, we celebrated our 10th anniversary | mailbox.org | 2026-11-03 |
| Transparency report | Yes Transparency Report 2025: A quarter of all requests from authorities rejected | mailbox.org | 2026-11-03 |
| Company headquarters | Not verified | — | |
| Where mail is stored | Germany Our servers are located exclusively in Germany (Berlin) | mailbox.org | 2026-11-03 |
| Company | Heinlein Group We stand on the shoulders of the Heinlein Group | mailbox.org | 2026-11-03 |
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