SmarterMail - IIS - EWS - eM Client

Wanting to sync email, calendar, and contacts using eM Client with a SmarterMail v14 server running IIS 7.5 and EWS. Is it required to have WebDAV publishing enabled on IIS for this? I am able to sync email without WebDAV installed, but contacts and calendars do not sync at all. I used the autodiscover feature to set up the client.

Anyone able to answer this?


Do company reps read these posts? I really want to be able to buy eM Client,  but if it won’t work with my calendars and contacts I can’t do so.

Any help, please?