In previous versions of SmarterMail, it was not possible to sync shared calendar (only your defaut calendar).
I read SM 14 add Multiple Calendar Support :
"Even better, users can sync their additional account calendars using Exchange ActiveSync, Exchange Web Services, CalDAV and SharePoint."
I understand you can sync the various calendars you create in your account, but can you now sync a calendar someone else shared with you ?
Thank you !