The service is purelymail - www.purelymail.com. I will try to find out what software they're using for their calendar server.
They have some documentation here: https://purelymail.com/docs/webDav -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2083560 Title: Cannot connect WebDAV/CalDAV account via Settings (gnome-control- center) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/2083560/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs