Cyrus IMAP is an open-source email, contacts and calendar server. It also offers WebDAV files.
DAVx⁵ settings
Base URL: /
(e.g. https://example.com/
)
User name and password: as configured on your server
WebDAV setup
You can mount folders from the Cyrus user-root directory using the DAVx⁵ WebDAV mounts feature.
WebDAV URL: https://<servername>/dav/drive/user/<username>
User name and password: same as for CalDAV/CardDAV
Hint: drive
in the WebDAV URL above may be different if the server uses an edited davdriveprefix:
value