Addressbook and Calendar

In this category, you will find articles about connecting and synchronizing calendars and address books of your mailbox.org account with third-party software and other tools. Learn how to share calendars and address books with other mailbox.org users or external recipients, or create shareable links. Import your data from other providers and synchronize selected contacts and address books with your smartphone, mobile devices, Windows, Apple, and Linux. mailbox.org is offering ActiveSync, Microsoft Exchange, CalDAV, CardDAV and WebDAV.

📄️ CalDAV and CardDAV Login Credentials

CalDAV & CardDAV Credentials

📄️ CalDAV and CardDAV for Android with OX Sync

The OX Sync App is no longer maintained by Open‑Xchange and will soon be removed from app stores. It will no longer be available for download and should no longer be used.

📄️ CalDAV for Outlook with CalDav Synchronizer

Outlook: Configure CalDav Synchronizer

📄️ CalDAV and CardDAV for Evolution

If you use Evolution e-mail client with the Gnome Desktop Environment, your password will be saved in the Gnome Keyring. If you experience difficulties with the password, please bear this in mind and check if the Keyring works correctly.

📄️ Calendar and tasks in Thunderbird

To embed your mailbox.org Office calendar and task lists in Mozilla Thunderbird, you may use the lightning calendar of Thunderbird.

📄️ How to embed calendars in KOrganizer

External calendars and task lists can be managed in the KOrganizer settings, under the section General and the tab Calendars. Click the Add... button to embed your calendars from the mailbox.org Office.

📄️ Tip - Embedding School Breaks and Holidays

Would you like to have this year’s school breaks and business holidays in your calendar? The website https://www.schulferien.org allows you to download the annual break/holiday schedule for Germany as iCal files. You can then import these files into your mailbox.org calendar.

📄️ Different calendars in different colors

It is possible to assign different colors to different calendars in order to make the display clearly arranged. To use this option you have choose the scheme Custom Colors_** in the menu _**View at top right.

📄️ CalDAV and CardDAV for macOS and iOS

You can synchronize your contacts and calendars with your Apple devices (macOS, iOS) using either ActiveSync or CalDAV and CardDAV. Below, we describe the synchronization using the CalDAV and CardDAV protocols.

📄️ Global address book

The "Global address book " automatically contains all contacts of your context. This address book is not editable.

📄️ Loss of phone numbers with CardDav

Any contact created on an Android smartphone needs to have a default phone number specified before it can be synchronized with your address book. If additional numbers are added to a contact using the smartphone, these will be stored locally at first but not necessarily synchronized with our servers if you use CardDav.