mailbox.org
🇩🇪 DE · from €12/mo
4.3/5· 125 reviews across 3 portals
Berlin-based encrypted email, calendar and cloud storage with PGP in the browser and German servers only.
Replaces
mailbox.org is sought as a European alternative to:
Features
Email & Communication
- Ad-free email with custom domains
- PGP encryption for emails
- Two-factor authentication (2FA)
- Spam and virus protection
- Email migration tool for importing existing emails
Productivity Suite
- Calendar with CalDAV support
- Contacts with CardDAV support
- Office suite based on Open-Xchange (text, spreadsheet, presentations)
- Cloud storage (Drive) with file sharing
Collaboration & Security
- Video conferencing (Jitsi-based)
- End-to-end encryption for sensitive data
- EU-hosted servers (Germany)
- GDPR-compliant data processing
Pricing
- Email, calendar, address book
- 10 GB storage (Mail + Drive)
- Custom domains supported
- 30-day free trial
- 25% discount compared to monthly billing
- Same features as monthly Standard plan
- Suitable for long-term users
Pricing varies based on billing cycle and storage upgrades. Additional plans (e.g., Premium) may be available but are not detailed in the research.
EU Trust Profile
What we verified against public sources, last checked 2026-09-28. Every point links to its evidence.
- Evidence →European legal entity
Legal operator is Heinlein Hosting GmbH, registered in Berlin, Germany.
- Evidence →Data Processing Agreement (DPA)
Business customers can conclude a Data Processing Agreement (DPA) online in the business portal.
- Evidence →Trust center / security page
Dedicated pages for security, certifications, and compliance are provided.
- Evidence →ISO 27001Information Security Management System (ISMS)
- Evidence →BSI C5BSI C5 Type 1
- Evidence →Documented data exportEML, ICS, VCF, WebDAV
Emails, calendars, contacts, and files can be exported via the user interface.
- Evidence →Local-language support
Support is provided in German and English via knowledge base, help desk, and user forums.
We list only what we could verify against a public source on the check date. A point that is absent was not established either way — it is not a finding against the vendor. The vendor's own information prevails.
Work at mailbox.org?
This badge is free for every vendor we list and has no bearing on the order of any list. It is issued on the basis of a verified European headquarters (DE) and the compliance points we checked against public sources — the date on it is the date we last checked.
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Reviews
Recurring themes, synthesized from public reviews across portals.
What users value
- Strong privacy focus with PGP encryption via Guard or Mailvelope plugin
- Clean, user-friendly interface and intuitive setup for secure email
- Integrated office suite (text, spreadsheets, presentations) and calendar for team collaboration
- Affordable entry point with Light tier at €1/month for secure email
- Servers exclusively in Germany, ensuring strict EU data protection (GDPR) compliance
- Runs on renewable energy, aligning with sustainability requirements
- Supports linking multiple business email accounts for centralized management
- High security protocols and transparent data handling practices
Where users see room to improve
- · Limited storage capacity, described as insufficient for business needs
- · Extended onboarding (3–4 weeks) due to usability issues in the web interface
- · Prepaid, non-refundable credit model lacks flexibility for some users
Ratings across portals
Linked facts, we bring ratings from every portal together in one place.
mailbox.org: frequently asked questions
- How much does mailbox.org cost?
- mailbox.org starts at €12/mo. Plans: Standard (€3/mo), Standard (Annual Payment) (€12/mo). Pricing varies based on billing cycle and storage upgrades. Additional plans (e.g., Premium) may be available but are not detailed in the research.
Other vendors in Office & Productivity Suites
- Stackfield🇩🇪All-in-one German workspace for tasks, team chat and video calls, end-to-end encrypted
- Nextcloud🇩🇪Open-source collaboration suite with EU hosting and end-to-end encryption, built in Germany.
- Collabora Online🇬🇧Open-source, browser-based office suite with EU hosting and Nextcloud integration
- Infomaniak kSuite🇨🇭Collaborative office suite with OnlyOffice, chat, calls and email
- LibreOffice🇩🇪Free, open-source office suite with full document control and no vendor lock-in.
- ONLYOFFICE🇱🇻Open-source office suite with EU hosting and full Microsoft Office compatibility
Feature, pricing and integration details are based on web research (as of 2026-08-02), without guarantee, errors are possible. The vendor's website prevails.