CalDAV is a technology that lets you synchronize your calendars over the internet. Imagine you have a calendar with your email provider (like GMX, web.de, Posteo, or Mailbox.org) and you want to access these appointments in other apps too – that's exactly what CalDAV does.
With CalDAV, your appointments automatically sync across different devices and applications. The great thing about it: CalDAV is an open standard supported by many providers. This means you're not locked into large platforms like Google Calendar or Microsoft – you can also use smaller, privacy-focused providers.
This integration is available on all Zeeg plans (Starter, Professional, Business, Scale, Enterprise).
Connect your CalDAV Calendar with Zeeg
1. In your Zeeg dashboard, click on your name in the top left and select Integrations from the dropdown menu.
2. Search for CalDAV Calendar and click on the integration to open its details.
3. Click Add + next to CalDAV (Self-hosted, GMX, Zimbra etc.).
4. Enter your complete email address, Password and Server URL
5. Click Save to complete the connection.
After a successful connection, Zeeg will automatically synchronize your calendar. This may take a few minutes. Your appointments will then appear in your Zeeg availability.
Find your CalDAV server URL
The CalDAV server URL varies by provider. Here are some examples:
Common providers
Research your server URL
If your provider isn't listed:
Open a search engine (e.g., Google)
Search for: "caldav [Your Provider] server"
Example: caldav gmx server
The server URL can usually be found in your email provider's official documentation
Tip: Make sure to include the complete URL including https://.
Common issues and solutions
Connection fails
Problem: Login is rejected or the connection cannot be established.
Solutions:
Verify that your email address and password are correct
Ensure the server URL is complete and correct (including https://)
For some providers, you may need to create an app-specific password if you have two-factor authentication enabled
Contact your email provider to confirm that CalDAV is enabled
Appointments not syncing
Problem: The connection exists, but appointments don't appear in Zeeg.
Solutions:
Wait a few minutes—the initial synchronization may take some time
Check if the correct calendar is selected
Disconnect and reconnect the calendar
Contact Zeeg support if the problem persists
Two-factor authentication (2FA)
If you have two-factor authentication enabled with your email provider, you may need an app password:
Log in to your email provider
Look for security settings
Create a new app password for CalDAV
Use this app password instead of your regular password in Zeeg
Supported providers
The CalDAV integration works with all providers that support the CalDAV standard, including:
GMX
web.de
Posteo
Mailbox.org
Zimbra
Self-hosted CalDAV servers (Nextcloud, ownCloud, etc.)
Many other email providers
If you're unsure whether your provider supports CalDAV, check your email provider's documentation or contact their support.
Frequently asked questions
How many CalDAV calendars can I connect?
You can connect unlimited CalDAV calendars to your Zeeg account. Zeeg checks availability across all connected calendars and automatically prevents double bookings.
Does the CalDAV integration cost extra?
No, the CalDAV integration is available on all Zeeg plans (Starter, Professional, Business, Scale, Enterprise) at no additional cost.
How quickly are changes synchronized?
Zeeg synchronizes your CalDAV calendar in real-time. New appointments and changes are typically transferred within a few minutes. Synchronization speed may vary slightly depending on your email provider.
What happens if I change my email password?
If you change your password with your email provider, you must update the connection in Zeeg. Disconnect the calendar and reconnect it with the new credentials.