title: is there a way to get the smtpaddress for an mapifolder or outlook interop folder given the entryid (or storeid)
body: <p>if i have the storeid for a mapifolder, selected through the folderpicker from the outlook interop libraries, is there a way for me to get the smtpaddress for that folder?</p>
  
  <p>i know it's in the extended properties, but i was hoping to do it without any heavy parsing or ldap querying.</p>
  
  <p>the reason i need the smtpaddress is in order to connect to the folder via EWS - i'm currently trying to replace our references to outlook interop with exchange web services, and this has become a sticking point, since many of our users have delegate access to mailboxes that don't belong to them</p>