mailbox.org Review
mailbox.org packs mail, calendars, Drive, Office and video conferencing into a Berlin-hosted, certification-heavy package from EUR 1 per user. It is the pragmatic European answer to Google Workspace; you trade interface polish for jurisdiction and paperwork that compliance teams actually accept.
Review last updated 2026-08-20 · How we rate hosts
Scorecard
Pros
- German privacy engineering: GDPR, ISO 27001 certification and BSI C5 attestation
- Guard feature encrypts incoming mail with your PGP key, even from non-PGP senders
- Full groupware: calendars, Drive storage, web Office suite and video conferencing
- Runs its own hardware in Berlin datacenters on certified green energy
- EUR 1 Light tier is a credible minimal business mailbox
Cons
- Interface (Open-Xchange) feels dated next to Gmail or Fastmail
- Support is tickets only and can be slow; no phone or chat
- Encryption is opt-in and key handling has a learning curve
- Drive and Office features lag the polish of Google or Microsoft equivalents
mailbox.org plans & pricing
Promotional monthly rates as of August 20, 2026; most require the listed prepaid term and renew at the higher rate shown. Confirm on mailbox.org's site before buying.
| Plan | Intro price | Renews at | Storage | Sites | Bandwidth | Notes |
|---|---|---|---|---|---|---|
| LightEmail Hosting | $1.10/momonthly or annual billing | $1.10/mo | EUR 1 per user/mo; 2 GB mail, calendar and contacts; no Office suite or video conferencing | |||
| StandardEmail Hosting | $4.40/momonthly or annual billing | $4.40/mo | EUR 4 per user/mo; adds 10 GB Drive, the web Office suite, video conferencing and custom domains | |||
| PremiumEmail Hosting | $13.20/momonthly or annual billing | $13.20/mo | EUR 12 per user/mo; 50 GB mail plus 100 GB Drive storage |
Our mailbox.org review
mailbox.org grew out of Heinlein Support, a Berlin outfit that has run mail servers since 1989, and it shows: this is email operated by people who treat deliverability, DNSSEC, DANE and TLS reporting as table stakes. Launched in 2014, the service runs on company-owned hardware in Berlin datacenters powered by certified green energy, under German privacy law and the GDPR.
The pricing is per user and honest. Light at EUR 1 gets a 2 GB mailbox with calendar and contacts - the cheapest serious European business mailbox. Standard at EUR 4 is the plan most teams want: 20 GB of mail, 10 GB of Drive, a web Office suite, video conferencing and custom domain support. Premium at EUR 12 mostly buys storage (50 GB mail, 100 GB Drive). There are no promotional games; prices renew where they start, and a 30-day trial requires no payment card.
The privacy story is deeper than marketing. The Guard feature can encrypt every incoming message with your public PGP key before it touches disk, so even mail from non-PGP senders is stored encrypted. You can sign up and pay with minimal data, use disposable aliases, and the company publishes transparency reports. For regulated businesses, the ISO 27001 certification and BSI C5 attestation are the kind of paperwork that lets a compliance officer approve a vendor without a fight.
The trade-off is the software. mailbox.org runs on Open-Xchange, and while it is complete - mail, calendar, tasks, Drive, an office suite that edits Word and Excel formats, and Jitsi-based video conferencing - it looks and feels a generation behind Gmail, and some settings hide three menus deep. IMAP, POP, CalDAV, CardDAV and ActiveSync all work, so most users are happiest pairing it with a native client.
Support is the other soft spot. It is ticket-based, German business hours in practice, and while answers are competent they are not fast. Teams that expect to pick up a phone should look at Zoho's enterprise tier or stay with Microsoft.
For European businesses, privacy-conscious individuals and anyone who wants Google Workspace functions without US jurisdiction, mailbox.org is one of the two default choices alongside Proton. Pick Proton for zero-access encryption and modern apps; pick mailbox.org for standard protocols, groupware breadth and lower per-seat cost.
Notable facts
- Operated by Heinlein Support, running mail infrastructure in Berlin since 1989
- ISO 27001 certified with a BSI C5 attestation, rare among privacy mail providers
- Guard feature PGP-encrypts incoming mail at rest, even from non-PGP senders
At a glance
| Founded | 2014 |
|---|---|
| Headquarters | Berlin, Germany |
| Data centers | Berlin, Germany |
| Hosting types | Email Hosting |
| Starting price | $1.10/mo |
| Support | email, tickets, knowledge-base |
| Free migration | No |
| Green hosting | Yes |
Frequently asked questions
Does mailbox.org support custom domains?
Yes. Custom domains are supported from the Standard plan (EUR 4 per user/mo), including catch-all addresses and proper DKIM/SPF/DMARC setup. The EUR 1 Light plan is limited to mailbox.org addresses.
Is mailbox.org end-to-end encrypted?
Not by default. Transport and storage are encrypted, and the optional Guard feature encrypts incoming mail with your PGP key so stored messages are unreadable to the provider. Full end-to-end encryption requires you and your correspondents to use PGP.
Bottom line
mailbox.org packs mail, calendars, Drive, Office and video conferencing into a Berlin-hosted, certification-heavy package from EUR 1 per user. It is the pragmatic European answer to Google Workspace; you trade interface polish for jurisdiction and paperwork that compliance teams actually accept.
Check current mailbox.org pricing →
