Integrate Active sync protocol with Z-push
I'm not sure if it is possible, but you would get more cliants with activesync protocol for example using http://z-push.sourceforge.net/soswp/ .
I know syncml is considered, but as there is no working implementation...
AdminAndrew McMillan (Admin, DAViCal) commented
I am told that implementations of ActiveSync require a license from Microsoft.
Again, as with syncml, a caldav backend would be great. Someone out there seems to have already done it ( http://forums.eyeos.org/index.php?topic=4293.0 ), a pity that there is no code to be found.