MDaemon version 13.6 is out today and with it some useful enhancements, particularly if you're using ActiveSync with your mobile devices.
Download MDaemon 13.6
View the release notes
It's worth noting this release includes a whole host of minor tweaks to Worldclient (notable an HTML signature editor) and WebAdmin which you can read about in the release notes but I think it's the following you'll be most interested in.