Answers for private customers

The Knowledge Base for private customers is already largely up to date. A few individual articles are currently being revised and adapted. We thank you for your understanding and look forward to providing you with up-to-date information on using mailbox.

Please note: The knowledge base has changed slightly. Categories have been adapted and URLs stored in the old knowledge base may no longer be valid.

Exchange ActiveSync for Mac OS X and Windows

Data synchronisation via ActiveSync should only work with mobile devices such as iPhones, iPads, Android devices or BlackBerrys. Synchronisation via ActiveSync with a Windows PC or Mac is officially not possible – ActiveSync was not developed for this purpose.

Although some people may have managed to do so, it is not an officially supported feature and we therefore advise against it.

Note on Exchange ActiveSync

As Exchange ActiveSync (EAS) was developed by Microsoft, it runs smoothly on most Microsoft devices with Microsoft software.
For all other devices (Android, iOS, Linux), the ability to synchronise multiple calendars depends on the implementation of EAS and therefore cannot be resolved or changed by us.
We therefore recommend that our users use the open standards IMAP and CalDAV/CardDAV for synchronisation.

The respective setup for the different platforms is described in detail in our help/FAQ articles.

Answers for private customers

Note on Exchange ActiveSync​

Note on Exchange ActiveSync