The Atmail CalDAV client
Atmail is a proprietary webmail client with calendar support. Instead of providing a custom calendar, CalDAV is used for the underlying datastore, which is very smart.
Connecting with Atmail
Using your own CalDAV server can be configured through the 'Settings' tab.
Currently Atmail only appears to support HTTP Basic authentication. This is problematic for SabreDAV, as most authentication backends are all Digest based.
Implementor notes
User agent
Atmlal sends the following user agent: