Hi,
I am using EM client on a mac with a magic mouse. What I really miss is the possibility to swipe left/right in Calendar view (e.g. in week view) to quicly scroll to next/previous weeks (just like the native Apple Calendar app or for example BusyCal does). Now you have to click on the arrows (top left in the main window), which is far less convenient and takes more time, since you have to move your mouse pointer to the arrows instead of simply move your finger left/right on the mouse.
Maybe this option could be added to the swipe preferences (which are there for mail and tasks), so that users can chose if they want to make use it in Calender view.
Otherwise, it’s a great app!