C++ GetFolderCount, GetFolderProp sample. 

#include "AIRMail SDK.h" 

void ListFolders ( ) 
{ 
  DWORD fcount = GetFolderCount ( AIRMail SDKHandle ); 
  if ( fcount == 0 ) 
  { 
    cout << "No folders or handle is invalid" << endl; 
    return; 
  } 

  for ( DWORD i = 0 ; i < fcount; i++ ) 
  { 
    FOLDERPROP folder; 
    GetFolderProp ( AIRMail SDKHandle,i,&folder ) ; 
    cout << folder. Name ; 
    cout << " - mail count: " << folder. MailCount << endl; 
  } 
}