for schools and public authorities

Our GDPR-compliant SaaS solution is the right choice for all institutions relying on security and flexibility.

  • E-mails, Online Storage, Online Office and video conferencing
  • Customisable range of functionality
  • Different support levels available
  • Simple management through our API
  • No vendor lock-in

Data protection is in our DNA is run by experts in secure, data protection-compliant communication. Heinlein Support is the company that operates the e-mail provider and has over 30 years of industry experience. Since its founding in 2014, has grown and developed to offer users a comprehensive communication platform poised to compete with the big players in the market.

With us, you don't need to worry about discussions with your data protection officer. We are a provider from Germany with two server locations in Berlin. We have experience with the demanding requirements profile of public authorities and educational institutions. Our specialists have data protection and security well in sight.

Data centres in Germany


No vendor lock-in

Access management

PGP with web-mail

Spam-/ virus protection



Administrator overview

TLS 1.3 where possible

No unnecessary data collection

Login with single sign-on (SSO)

Public authorities and organisations who put their trust in

Bild Weltzeituhr

More than just a secure e-mail inbox offers a comprehensive communication platform for all organisations desiring a solution that is compliant with data protection regulations.

  • GDPR-compliant, Germany-based server
  • Feature-rich communication suite
  • Flexible solution, simple integration
  • Open standards: no vendor lock-in
  • Central administration interface for admins & API


At the core of our service is a professional e-mail inbox. It's easy to use and navigate and comes with a calendar, address book and many other features included.

  • Webmail client: No local software installation required
  • Works with IMAP in other e-mail clients
  • Includes address books and calendars
  • PGP and S/MIME works in the Webmail client
  • Download links for large e-mail attachments

Learn more

Online Storage

The Online Storage keeps all your documents in one place, so you can access them from any place and at any time. With the Online Storage, it's easy to upload, manage and share files.

  • Upload files using Drag & Drop
  • Ideal for collaboration within a team
  • Effective permissions management
  • Sharing (Password protection and expiry date optionally available)
  • PGP encryption of all files optionally available

Learn more


Create and edit your files at any time and from anywhere. The sharing of and working on documents collaboratively has never been easier. The Online Office offers word processing, spreadsheets, and presentations.

  • Runs in the browser, without installation
  • Create and edit documents, spreadsheets, and presentations
  • Work online and directly on your Cloud Storage
  • Share web links to files, with guest access for recipients available

Learn more

Video conferencing

Users can rely on our video conferencing solution: Stable and reliable, based on open-source software and hosted in our data centres. As easy as a phone call and almost as good as a face-to-face conversation.

  • OpenTalk, the video conferencing solution by Heinlein Support.
  • Runs completely in your Web browser
  • Many features included

Learn more

Admin interface & API

The administration interface for your organisation's administrator provides all required information in a single place. Admins can perform all kinds of common tasks such as setting up mailboxes, changing price plans for individual users, or resetting user passwords.

  • Easy setup of your domain names
  • Straightforward configuration of employee inboxes
  • Individual feature adjustment
  • API available
Bild Berline Mitte

Your advantages at Business

Account management, API integration, GDPR-compliant commissioned data processing agreements, moving service: Business e-mail hosting that suits all your needs.



Features of Business

Key differences between Business and our private accounts:

  • E-mail addresses use your business domain name
  • Arbitrary user groups sharing calendars, contacts, files, etc.
  • A central account management interface for all e-mail addresses and settings
  • API for user management, process integration, or your user portal
  • Billing options offer VAT deduction and Direct Debit
  • Priority support & service according to your needs - 24/7 if required
Central management & API

Stay on top of everything! As a Business Mail customer you get your own dedicated management interface and have full control over all relevant aspects of your mail hosting environment.

  • Central administration
    Use your central administration interface to manage your contract, domains, inboxes, forwarding addresses, passwords, storage space and all other account settings.

  • Allow individual settings?
    Decide to which degree your users may modify settings for spam filters, backup and storage space (Quota).

  • Group ware and user groups
    Define different user groups within your account and allocate groupware resources such as calendars, contacts, and files for easier collaborative use.

  • API for Pros
    Are you maintaining a larger environment and have individual management processes? Or would you like to offer our services to your customers as a reseller? All settings can be controlled through our API which allows integrating our system into your infrastructure.
Support & Service

Depending on your chosen service package, our specialists are available to assist your account administrator either via e-mail or on the phone – in case of emergency around the clock, 24/7. Just choose what level of support best suits your needs.

  • 2nd/3rd-level support provides 2nd/3rd-level support for you as a business customer or your designated account administrator.

  • 1st-level support with selected price plans
    We can also assist you in providing 1st-level support for your employees (on request). Please note that this is only available for customers on our STANDARD or PREMIUM price plans.

  • Dedicated contact person
    Your personal contact stands ready to answer any questions you may have about the onboarding process or the contract (Business service packages Platinum or Gold only).
Contract & Billing

As a business customer of you are always flexible:

  • Flexible contracts
    E-mail addresses can be set up and removed on a daily basis. Any tariff changes made apply immediately. You can also scale your booked storage space on short notice and will only pay for what you need.

  • Billing options for businesses
    Monthly collective VAT invoices. Direct Debit available.

  • Short notice cancellation
    We will never lock anyone into expensive annual contracts. Our customers are with us because they want to. Short notice periods are a given at
Consultation, Planning & Moving

You are unsure about what exactly your requirements are? You already have a significant body of data in the cloud and are worried things might get difficult when you move? No matter if you are currently using GMail, Office365, another hosting provider, or your own dedicated solution: Professional help is available - before, during, and after your move.

  • Support for you and your administrators
    What is possible, useful, and reasonable? As a business customer, you will have a dedicated contact person at who will answer your questions, sort out any issues, and coordinate your move to us.

  • Moving with audriga
    Our partner audriga provides methods that automatically move your existing data and accounts, such as e-mail, calendars, contacts, and files from your cloud storage.
    This works like a premium relocation service: When you enter your new Office, your furniture is already there and all your stuff in the right place.

  • Help with configuration matters
    If you have any questions about apps and software, or need advice on established methods and best practices, your personal key account manager will be happy to support your Onboarding.
Bild Wächter

The best security for your privacy at

Privacy made in Germany.



We will do everything to protect you.

With us, you can encrypt your e-mails directly in the webmailer with PGP, as well as your entire mailbox. You don't need to be an IT security expert to do this. That's us at Our long-standing experts protect your data on our systems. This is another reason why we do not operate on rented servers, but with our own redundant infrastructure in our Berlin data centres.

We were also able to convince the Federal Office for Information Security with our service. The PREMIUM, STANDARD and LIGHT plans bear the BSI's IT security mark.



Security highlights

  • Professional spam and virus protection
  • PGP encryption in the webmailer via Guard or Mailvelope
  • Own PGP key server
  • Use of the latest crypto algorithms
  • Use of Perfect Forward Secrecy (PFS), DNSSEC and DANE/TLSA
  • TLS checker integrated in the webmailer
  • Particularly secure addresses


Learn more about security at


Bild Büroräume

Individual plans for the public sector

Only pay for what you really need. We will be happy to advise you personally!

Your tailor-made mailbox

We know from experience that every organisation has its unique requirements and processes. For some customers, the e-mail inbox with plenty of extra mail storage is enough, while others use the all-in-one package with e-mail, cloud storage, online office and video conferencing. We offer you a customised solution without unnecessary costs.

In addition, your account administrator receives support through our e-mail ticket system or, if required, access to our 24/7 emergency hotline. We also offer 1st level support for your employees and training courses on request.

We are also happy to support you with migration and integration into existing systems. Just get in touch with us.

Get in touch with us!

* required