Synchronising calendar and tasks with KOrganizer

You can easily link your mailbox calendars and tasks to KOrganizer (KDE/Linux or Windows). To do this, follow these step-by-step instructions:

Open the external calendar manager
- Launch KOrganizer.
- In the menu, go to Settings > Configure KOrganizer and then to the General section.
- Open the Calendar tab.
- Click the Add button to add a new calendar source.
Select a groupware resource
- Select the entry DAV Groupware Resource from the list.
- Confirm by clicking OK.
Enter your login details
- Enter your full mailbox email address (e.g. max.mustermann@mailbox.org) as the username.
- Enter your mailbox password.
- If prompted, unlock the password manager KWallet using your master password to save the login details permanently.
Set up the resource manually
- Now select the option Set up the resource manually.
- Then click Finish.
Name the resource
- Give the resource any name you like, provided it is easily recognisable.
- Then click Add to add the calendar.
Configure CalDAV access
- Select CalDAV as the access protocol.
- Enter the following URL as the server address:
  https://dav.mailbox.org/
Retrieve calendars and tasks
- Click Retrieve to load a list of your calendars and tasks from mailbox.
- Select the desired entry and confirm your selection with OK.
- Add further collections in the same way.
- Complete the setup by clicking OK.

Your calendars and tasks are now successfully connected to KOrganizer and are available there – synchronised with your mailbox account.

Tip

Any changes you make in KOrganizer are automatically synchronised with mailbox.

Important after setup

Once you have enabled two-factor authentication, external programmes such as Outlook, Thunderbird, DAVx⁵ or mobile calendar and address book apps will no longer be able to access mailbox using your normal password. To do this, you must set up what is known as an application password. Without two-factor authentication (2FA) enabled, the use of application passwords is optional.